689 lines
21 KiB
Markdown
689 lines
21 KiB
Markdown
[](https://github.com/docker/build-push-action/releases/latest)
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[](https://github.com/marketplace/actions/build-and-push-docker-images)
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[](https://github.com/docker/build-push-action/actions?workflow=ci)
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[](https://github.com/docker/build-push-action/actions?workflow=test)
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[](https://codecov.io/gh/docker/build-push-action)
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## Upgrade from v1
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`v2` of this action includes significant updates and now uses Docker [Buildx](https://github.com/docker/buildx). It
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works with 3 new actions ([login](https://github.com/docker/login-action), [setup-buildx](https://github.com/docker/setup-buildx-action)
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and [setup-qemu](https://github.com/docker/setup-qemu-action)) that we have created. It's also rewritten as a
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[typescript-action](https://github.com/actions/typescript-action/) to be as close as possible of the
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[GitHub Runner](https://github.com/actions/virtual-environments) during its execution.
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[Upgrade notes](UPGRADE.md) and many [usage examples](#usage) have been added to handle most use cases but `v1` is
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still available through [`releases/v1` branch](https://github.com/docker/build-push-action/tree/releases/v1).
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## About
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GitHub Action to build and push Docker images with [Buildx](https://github.com/docker/buildx).
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> :bulb: See also:
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> * [login](https://github.com/docker/login-action) action
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> * [setup-buildx](https://github.com/docker/setup-buildx-action) action
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> * [setup-qemu](https://github.com/docker/setup-qemu-action) action
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___
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* [Usage](#usage)
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* [Git context](#git-context)
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* [Path context](#path-context)
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* [Isolated builders](#isolated-builders)
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* [Multi-platform image](#multi-platform-image)
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* [Advanced usage](#advanced-usage)
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* [Push to multi-registries](#push-to-multi-registries)
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* [Cache to registry](#cache-to-registry)
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* [Local registry](#local-registry)
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* [Export image to Docker](#export-image-to-docker)
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* [Leverage GitHub cache](#leverage-github-cache)
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* [Handle tags and labels](#handle-tags-and-labels)
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* [Update DockerHub repo description](#update-dockerhub-repo-description)
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* [Customizing](#customizing)
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* [inputs](#inputs)
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* [outputs](#outputs)
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* [Notes](#notes)
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* [Multi-line secret value](#multi-line-secret-value)
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* [Troubleshooting](#troubleshooting)
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* [Keep up-to-date with GitHub Dependabot](#keep-up-to-date-with-github-dependabot)
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* [Limitation](#limitation)
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## Usage
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This action uses our [setup-buildx](https://github.com/docker/setup-buildx-action) action that extends the
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`docker build` command named [buildx](https://github.com/docker/buildx) with the full support of the features
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provided by [Moby BuildKit](https://github.com/moby/buildkit) builder toolkit. This includes multi-arch build,
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build-secrets, remote cache, etc. and different builder deployment/namespacing options.
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### Git context
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The default behavior of this action is to use the Git context invoked by your workflow.
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(eg. `https://github.com/<owner>/<repo>.git#<ref>`)
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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main:
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runs-on: ubuntu-latest
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steps:
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v1
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Login to DockerHub
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and push
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id: docker_build
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uses: docker/build-push-action@v2
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with:
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push: true
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tags: user/app:latest
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build-args: |
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arg1=value1
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arg2=value2
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-
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name: Image digest
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run: echo ${{ steps.docker_build.outputs.digest }}
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```
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Building from current repository automatically uses the [GitHub Token](https://help.github.com/en/actions/configuring-and-managing-workflows/authenticating-with-the-github_token)
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as provided by `secrets` so it does not need to be passed. But if you want to authenticate against another private
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repository, you have to use a secret named `GIT_AUTH_TOKEN` to be able to authenticate against it with buildx:
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```yaml
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-
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name: Build and push
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id: docker_build
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uses: docker/build-push-action@v2
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with:
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push: true
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tags: user/app:latest
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secrets: |
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GIT_AUTH_TOKEN=${{ secrets.MYTOKEN }}
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```
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> :warning: Subdir for Git context is not yet supported ([moby/buildkit#1684](https://github.com/moby/buildkit/issues/1684))
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> but you can use the [path context](#path-context) in the meantime.
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> More info: https://docs.docker.com/engine/reference/commandline/build/#git-repositories
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### Path context
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You can also use the `PATH` context alongside the [`actions/checkout`](https://github.com/actions/checkout/) action.
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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path-context:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v1
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Login to DockerHub
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and push
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uses: docker/build-push-action@v2
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with:
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context: .
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file: ./Dockerfile
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platforms: linux/amd64,linux/arm64,linux/386
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push: true
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tags: user/app:latest
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```
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### Isolated builders
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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multi-builders:
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runs-on: ubuntu-latest
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steps:
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-
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uses: docker/setup-buildx-action@v1
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id: builder1
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-
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uses: docker/setup-buildx-action@v1
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id: builder2
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-
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name: Builder 1 name
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run: echo ${{ steps.builder1.outputs.name }}
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-
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name: Builder 2 name
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run: echo ${{ steps.builder2.outputs.name }}
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-
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name: Build against builder1
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uses: docker/build-push-action@v2
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with:
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builder: ${{ steps.builder1.outputs.name }}
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target: mytarget1
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-
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name: Build against builder2
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uses: docker/build-push-action@v2
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with:
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builder: ${{ steps.builder2.outputs.name }}
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target: mytarget2
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```
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### Multi-platform image
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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multi:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v1
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Login to DockerHub
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and push
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uses: docker/build-push-action@v2
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with:
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context: .
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file: ./Dockerfile
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platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x
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push: true
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tags: |
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user/app:latest
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user/app:1.0.0
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```
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## Advanced usage
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### Push to multi-registries
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The following workflow will connect you to [DockerHub](https://github.com/docker/login-action#dockerhub)
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and [GitHub Container Registry](https://github.com/docker/login-action#github-container-registry) and push the
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image to these registries.
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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multi-registries:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v1
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Login to DockerHub
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Login to GitHub Container Registry
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uses: docker/login-action@v1
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with:
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registry: ghcr.io
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username: ${{ github.repository_owner }}
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password: ${{ secrets.CR_PAT }}
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-
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name: Build and push
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uses: docker/build-push-action@v2
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with:
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context: .
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file: ./Dockerfile
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platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x
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push: true
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tags: |
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user/app:latest
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user/app:1.0.0
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ghcr.io/user/app:latest
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ghcr.io/user/app:1.0.0
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```
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</details>
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### Cache to registry
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You can import/export cache from a cache manifest or (special) image configuration on the registry.
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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registry-cache:
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runs-on: ubuntu-latest
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steps:
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Login to DockerHub
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and push
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uses: docker/build-push-action@v2
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with:
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push: true
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tags: user/app:latest
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cache-from: type=registry,ref=user/app:latest
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cache-to: type=inline
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```
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</details>
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### Local registry
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For testing purposes you may need to create a [local registry](https://hub.docker.com/_/registry) to push images into:
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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local-registry:
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runs-on: ubuntu-latest
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services:
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registry:
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image: registry:2
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ports:
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- 5000:5000
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steps:
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v1
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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with:
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driver-opts: network=host
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-
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name: Build and push to local registry
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uses: docker/build-push-action@v2
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with:
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push: true
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tags: localhost:5000/name/app:latest
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-
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name: Inspect
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run: |
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docker buildx imagetools inspect localhost:5000/name/app:latest
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```
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</details>
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### Export image to Docker
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You may want your build result to be available in the Docker client through `docker images` to be able to use it
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in another step of your workflow:
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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export-docker:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Build
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uses: docker/build-push-action@v2
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with:
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context: .
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file: ./Dockerfile
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load: true
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tags: myimage:latest
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-
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name: Inspect
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run: |
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docker image inspect myimage:latest
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```
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</details>
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### Leverage GitHub cache
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You can leverage [GitHub cache](https://docs.github.com/en/actions/configuring-and-managing-workflows/caching-dependencies-to-speed-up-workflows)
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using [actions/cache](https://github.com/actions/cache) with this action:
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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push:
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branches: master
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jobs:
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github-cache:
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runs-on: ubuntu-latest
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steps:
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Cache Docker layers
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uses: actions/cache@v2
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with:
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path: /tmp/.buildx-cache
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key: ${{ runner.os }}-buildx-${{ github.sha }}
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restore-keys: |
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${{ runner.os }}-buildx-
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-
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name: Login to DockerHub
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and push
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uses: docker/build-push-action@v2
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with:
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push: true
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tags: user/app:latest
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cache-from: type=local,src=/tmp/.buildx-cache
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cache-to: type=local,dest=/tmp/.buildx-cache
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```
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</details>
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### Handle tags and labels
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If you come from [`v1`](https://github.com/docker/build-push-action/tree/releases/v1#readme) and want an
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"automatic" tag management and [OCI Image Format Specification](https://github.com/opencontainers/image-spec/blob/master/annotations.md)
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for labels, you can do it in a dedicated step. The following workflow will use the [Docker meta action](https://github.com/crazy-max/ghaction-docker-meta)
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to handle tags and labels based on GitHub actions events and Git metadata.
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<details>
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<summary><b>Show workflow</b></summary>
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```yaml
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name: ci
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on:
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schedule:
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- cron: '0 10 * * *' # everyday at 10am
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push:
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branches:
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- '**'
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tags:
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- 'v*.*.*'
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pull_request:
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jobs:
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docker:
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runs-on: ubuntu-latest
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steps:
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-
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name: Checkout
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uses: actions/checkout@v2
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-
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name: Docker meta
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id: docker_meta
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uses: crazy-max/ghaction-docker-meta@v1
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with:
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images: name/app # list of Docker images to use as base name for tags
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tag-sha: true # add git short SHA as Docker tag
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v1
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v1
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-
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name: Login to DockerHub
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if: github.event_name != 'pull_request'
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uses: docker/login-action@v1
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build and push
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id: docker_build
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uses: docker/build-push-action@v2
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with:
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context: .
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file: ./Dockerfile
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platforms: linux/amd64,linux/arm64,linux/386
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push: ${{ github.event_name != 'pull_request' }}
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tags: ${{ steps.docker_meta.outputs.tags }}
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labels: ${{ steps.docker_meta.outputs.labels }}
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```
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</details>
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### Update DockerHub repo description
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|
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You can update the [DockerHub repository description](https://docs.docker.com/docker-hub/repos/) using
|
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a third-party action called [DockerHub Description](https://github.com/peter-evans/dockerhub-description)
|
|
with this action:
|
|
|
|
<details>
|
|
<summary><b>Show workflow</b></summary>
|
|
|
|
```yaml
|
|
name: ci
|
|
|
|
on:
|
|
push:
|
|
branches: master
|
|
|
|
jobs:
|
|
main:
|
|
runs-on: ubuntu-latest
|
|
steps:
|
|
-
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|
name: Set up QEMU
|
|
uses: docker/setup-qemu-action@v1
|
|
-
|
|
name: Set up Docker Buildx
|
|
uses: docker/setup-buildx-action@v1
|
|
-
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|
name: Login to DockerHub
|
|
uses: docker/login-action@v1
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_TOKEN }}
|
|
-
|
|
name: Build and push
|
|
uses: docker/build-push-action@v2
|
|
with:
|
|
push: true
|
|
tags: user/app:latest
|
|
-
|
|
name: Update repo description
|
|
uses: peter-evans/dockerhub-description@v2
|
|
with:
|
|
username: ${{ secrets.DOCKERHUB_USERNAME }}
|
|
password: ${{ secrets.DOCKERHUB_PASSWORD }}
|
|
repository: user/app
|
|
```
|
|
</details>
|
|
|
|
## Customizing
|
|
|
|
### inputs
|
|
|
|
Following inputs can be used as `step.with` keys
|
|
|
|
> `List` type is a newline-delimited string
|
|
> ```yaml
|
|
> cache-from: |
|
|
> user/app:cache
|
|
> type=local,src=path/to/dir
|
|
> ```
|
|
|
|
> `CSV` type is a comma-delimited string
|
|
> ```yaml
|
|
> tags: name/app:latest,name/app:1.0.0
|
|
> ```
|
|
|
|
| Name | Type | Description |
|
|
|---------------------|----------|------------------------------------|
|
|
| `builder` | String | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action) |
|
|
| `context` | String | Build's context is the set of files located in the specified [`PATH` or `URL`](https://docs.docker.com/engine/reference/commandline/build/) (default [Git context](#git-context)) |
|
|
| `file` | String | Path to the Dockerfile. (default `{context}/Dockerfile`) |
|
|
| `build-args` | List | List of build-time variables |
|
|
| `labels` | List | List of metadata for an image |
|
|
| `tags` | List/CSV | List of tags |
|
|
| `pull` | Bool | Always attempt to pull a newer version of the image (default `false`) |
|
|
| `target` | String | Sets the target stage to build |
|
|
| `allow` | List/CSV | List of [extra privileged entitlement](https://github.com/docker/buildx#--allowentitlement) (eg. `network.host,security.insecure`) |
|
|
| `no-cache` | Bool | Do not use cache when building the image (default `false`) |
|
|
| `platforms` | List/CSV | List of [target platforms](https://github.com/docker/buildx#---platformvaluevalue) for build |
|
|
| `load` | Bool | [Load](https://github.com/docker/buildx#--load) is a shorthand for `--output=type=docker` (default `false`) |
|
|
| `push` | Bool | [Push](https://github.com/docker/buildx#--push) is a shorthand for `--output=type=registry` (default `false`) |
|
|
| `outputs` | List | List of [output destinations](https://github.com/docker/buildx#-o---outputpath-typetypekeyvalue) (format: `type=local,dest=path`) |
|
|
| `cache-from` | List | List of [external cache sources](https://github.com/docker/buildx#--cache-fromnametypetypekeyvalue) (eg. `type=local,src=path/to/dir`) |
|
|
| `cache-to` | List | List of [cache export destinations](https://github.com/docker/buildx#--cache-tonametypetypekeyvalue) (eg. `type=local,dest=path/to/dir`) |
|
|
| `secrets` | List | List of secrets to expose to the build (eg. `key=string`, `GIT_AUTH_TOKEN=mytoken`) |
|
|
| `secret-files` | List | List of secret files to expose to the build (eg. `key=filename`, `MY_SECRET=./secret.txt`) |
|
|
| `ssh` | List | List of SSH agent socket or keys to expose to the build |
|
|
|
|
### outputs
|
|
|
|
Following outputs are available
|
|
|
|
| Name | Type | Description |
|
|
|---------------|---------|---------------------------------------|
|
|
| `digest` | String | Image content-addressable identifier also called a digest |
|
|
|
|
## Notes
|
|
|
|
### Multi-line secret value
|
|
|
|
To handle multi-line value for a secret, you will need to place the key-value pair between quotes:
|
|
|
|
```yaml
|
|
secrets: |
|
|
"MYSECRET=${{ secrets.GPG_KEY }}"
|
|
GIT_AUTH_TOKEN=abcdefghi,jklmno=0123456789
|
|
"MYSECRET=aaaaaaaa
|
|
bbbbbbb
|
|
ccccccccc"
|
|
FOO=bar
|
|
"EMPTYLINE=aaaa
|
|
|
|
bbbb
|
|
ccc"
|
|
"JSON_SECRET={""key1"":""value1"",""key2"":""value2""}"
|
|
```
|
|
|
|
| Key | Value |
|
|
|--------------------|--------------------------------------------------|
|
|
| `MYSECRET` | `***********************` |
|
|
| `GIT_AUTH_TOKEN` | `abcdefghi,jklmno=0123456789` |
|
|
| `MYSECRET` | `aaaaaaaa\nbbbbbbb\nccccccccc` |
|
|
| `FOO` | `bar` |
|
|
| `EMPTYLINE` | `aaaa\n\nbbbb\nccc` |
|
|
| `JSON_SECRET` | `{"key1":"value1","key2":"value2"}` |
|
|
|
|
> Note: all quote signs need to be doubled for escaping.
|
|
|
|
## Troubleshooting
|
|
|
|
See [TROUBLESHOOTING.md](TROUBLESHOOTING.md)
|
|
|
|
## Keep up-to-date with GitHub Dependabot
|
|
|
|
Since [Dependabot](https://docs.github.com/en/github/administering-a-repository/keeping-your-actions-up-to-date-with-github-dependabot)
|
|
has [native GitHub Actions support](https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#package-ecosystem),
|
|
to enable it on your GitHub repo all you need to do is add the `.github/dependabot.yml` file:
|
|
|
|
```yaml
|
|
version: 2
|
|
updates:
|
|
# Maintain dependencies for GitHub Actions
|
|
- package-ecosystem: "github-actions"
|
|
directory: "/"
|
|
schedule:
|
|
interval: "daily"
|
|
```
|
|
|
|
## Limitation
|
|
|
|
This action is only available for Linux [virtual environments](https://help.github.com/en/articles/virtual-environments-for-github-actions#supported-virtual-environments-and-hardware-resources).
|