[![GitHub release](https://img.shields.io/github/release/docker/build-push-action.svg?style=flat-square)](https://github.com/docker/build-push-action/releases/latest) [![GitHub marketplace](https://img.shields.io/badge/marketplace-build--and--push--docker--images-blue?logo=github&style=flat-square)](https://github.com/marketplace/actions/build-and-push-docker-images) [![CI workflow](https://img.shields.io/github/actions/workflow/status/docker/build-push-action/ci.yml?branch=master&label=ci&logo=github&style=flat-square)](https://github.com/docker/build-push-action/actions?workflow=ci) [![Test workflow](https://img.shields.io/github/actions/workflow/status/docker/build-push-action/test.yml?branch=master&label=test&logo=github&style=flat-square)](https://github.com/docker/build-push-action/actions?workflow=test) [![Codecov](https://img.shields.io/codecov/c/github/docker/build-push-action?logo=codecov&style=flat-square)](https://codecov.io/gh/docker/build-push-action) ## About GitHub Action to build and push Docker images with [Buildx](https://github.com/docker/buildx) with full support of the features provided by [Moby BuildKit](https://github.com/moby/buildkit) builder toolkit. This includes multi-platform build, secrets, remote cache, etc. and different builder deployment/namespacing options. ![Screenshot](.github/build-push-action.png) ___ * [Usage](#usage) * [Git context](#git-context) * [Path context](#path-context) * [Examples](#examples) * [Multi-platform image](https://docs.docker.com/build/ci/github-actions/multi-platform/) * [Secrets](https://docs.docker.com/build/ci/github-actions/secrets/) * [Push to multi-registries](https://docs.docker.com/build/ci/github-actions/push-multi-registries/) * [Manage tags and labels](https://docs.docker.com/build/ci/github-actions/manage-tags-labels/) * [Cache management](https://docs.docker.com/build/ci/github-actions/cache/) * [Export to Docker](https://docs.docker.com/build/ci/github-actions/export-docker/) * [Test before push](https://docs.docker.com/build/ci/github-actions/test-before-push/) * [Local registry](https://docs.docker.com/build/ci/github-actions/local-registry/) * [Share built image between jobs](https://docs.docker.com/build/ci/github-actions/share-image-jobs/) * [Named contexts](https://docs.docker.com/build/ci/github-actions/named-contexts/) * [Copy image between registries](https://docs.docker.com/build/ci/github-actions/copy-image-registries/) * [Update Docker Hub repo description](https://docs.docker.com/build/ci/github-actions/update-dockerhub-desc/) * [SBOM and provenance attestations](https://docs.docker.com/build/ci/github-actions/attestations/) * [Annotations](https://docs.docker.com/build/ci/github-actions/annotations/) * [Reproducible builds](https://docs.docker.com/build/ci/github-actions/reproducible-builds/) * [Customizing](#customizing) * [inputs](#inputs) * [outputs](#outputs) * [environment variables](#environment-variables) * [Troubleshooting](#troubleshooting) * [Contributing](#contributing) ## Usage In the examples below we are also using 3 other actions: * [`setup-buildx`](https://github.com/docker/setup-buildx-action) action will create and boot a builder using by default the [`docker-container` driver](https://docs.docker.com/build/building/drivers/docker-container/). This is **not required but recommended** using it to be able to build multi-platform images, export cache, etc. * [`setup-qemu`](https://github.com/docker/setup-qemu-action) action can be useful if you want to add emulation support with QEMU to be able to build against more platforms. * [`login`](https://github.com/docker/login-action) action will take care to log in against a Docker registry. ### Git context By default, this action uses the [Git context](https://docs.docker.com/engine/reference/commandline/build/#git-repositories), so you don't need to use the [`actions/checkout`](https://github.com/actions/checkout/) action to check out the repository as this will be done directly by [BuildKit](https://github.com/moby/buildkit). The git reference will be based on the [event that triggered your workflow](https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows) and will result in the following context: `https://github.com//.git#`. ```yaml name: ci on: push: branches: - 'main' jobs: docker: runs-on: ubuntu-latest steps: - name: Set up QEMU uses: docker/setup-qemu-action@v3 - name: Set up Docker Buildx uses: docker/setup-buildx-action@v3 - name: Login to Docker Hub uses: docker/login-action@v3 with: username: ${{ secrets.DOCKERHUB_USERNAME }} password: ${{ secrets.DOCKERHUB_TOKEN }} - name: Build and push uses: docker/build-push-action@v6 with: push: true tags: user/app:latest ``` Be careful because **any file mutation in the steps that precede the build step will be ignored, including processing of the `.dockerignore` file** since the context is based on the Git reference. However, you can use the [Path context](#path-context) using the [`context` input](#inputs) alongside the [`actions/checkout`](https://github.com/actions/checkout/) action to remove this restriction. Default Git context can also be provided using the [Handlebars template](https://handlebarsjs.com/guide/) expression `{{defaultContext}}`. Here we can use it to provide a subdirectory to the default Git context: ```yaml - # Setting up Docker Buildx with docker-container driver is required # at the moment to be able to use a subdirectory with Git context name: Set up Docker Buildx uses: docker/setup-buildx-action@v3 - name: Build and push uses: docker/build-push-action@v6 with: context: "{{defaultContext}}:mysubdir" push: true tags: user/app:latest ``` Building from the current repository automatically uses the [GitHub Token](https://docs.github.com/en/actions/security-guides/automatic-token-authentication), so it does not need to be passed. If you want to authenticate against another private repository, you have to use a [secret](https://docs.docker.com/build/ci/github-actions/secrets) named `GIT_AUTH_TOKEN` to be able to authenticate against it with Buildx: ```yaml - name: Build and push uses: docker/build-push-action@v6 with: push: true tags: user/app:latest secrets: | GIT_AUTH_TOKEN=${{ secrets.MYTOKEN }} ``` ### Path context ```yaml name: ci on: push: branches: - 'main' jobs: docker: runs-on: ubuntu-latest steps: - name: Checkout uses: actions/checkout@v4 - name: Set up QEMU uses: docker/setup-qemu-action@v3 - name: Set up Docker Buildx uses: docker/setup-buildx-action@v3 - name: Login to Docker Hub uses: docker/login-action@v3 with: username: ${{ secrets.DOCKERHUB_USERNAME }} password: ${{ secrets.DOCKERHUB_TOKEN }} - name: Build and push uses: docker/build-push-action@v6 with: context: . push: true tags: user/app:latest ``` ## Examples * [Multi-platform image](https://docs.docker.com/build/ci/github-actions/multi-platform/) * [Secrets](https://docs.docker.com/build/ci/github-actions/secrets/) * [Push to multi-registries](https://docs.docker.com/build/ci/github-actions/push-multi-registries/) * [Manage tags and labels](https://docs.docker.com/build/ci/github-actions/manage-tags-labels/) * [Cache management](https://docs.docker.com/build/ci/github-actions/cache/) * [Export to Docker](https://docs.docker.com/build/ci/github-actions/export-docker/) * [Test before push](https://docs.docker.com/build/ci/github-actions/test-before-push/) * [Local registry](https://docs.docker.com/build/ci/github-actions/local-registry/) * [Share built image between jobs](https://docs.docker.com/build/ci/github-actions/share-image-jobs/) * [Named contexts](https://docs.docker.com/build/ci/github-actions/named-contexts/) * [Copy image between registries](https://docs.docker.com/build/ci/github-actions/copy-image-registries/) * [Update Docker Hub repo description](https://docs.docker.com/build/ci/github-actions/update-dockerhub-desc/) * [SBOM and provenance attestations](https://docs.docker.com/build/ci/github-actions/attestations/) * [Annotations](https://docs.docker.com/build/ci/github-actions/annotations/) * [Reproducible builds](https://docs.docker.com/build/ci/github-actions/reproducible-builds/) ## 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 | |--------------------|-------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `add-hosts` | List/CSV | List of [customs host-to-IP mapping](https://docs.docker.com/engine/reference/commandline/build/#add-entries-to-container-hosts-file---add-host) (e.g., `docker:10.180.0.1`) | | `allow` | List/CSV | List of [extra privileged entitlement](https://docs.docker.com/engine/reference/commandline/buildx_build/#allow) (e.g., `network.host,security.insecure`) | | `annotations` | List | List of annotation to set to the image | | `attests` | List | List of [attestation](https://docs.docker.com/build/attestations/) parameters (e.g., `type=sbom,generator=image`) | | `builder` | String | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action) | | `build-args` | List | List of [build-time variables](https://docs.docker.com/engine/reference/commandline/buildx_build/#build-arg) | | `build-contexts` | List | List of additional [build contexts](https://docs.docker.com/engine/reference/commandline/buildx_build/#build-context) (e.g., `name=path`) | | `cache-from` | List | List of [external cache sources](https://docs.docker.com/engine/reference/commandline/buildx_build/#cache-from) (e.g., `type=local,src=path/to/dir`) | | `cache-to` | List | List of [cache export destinations](https://docs.docker.com/engine/reference/commandline/buildx_build/#cache-to) (e.g., `type=local,dest=path/to/dir`) | | `cgroup-parent` | String | Optional [parent cgroup](https://docs.docker.com/engine/reference/commandline/build/#use-a-custom-parent-cgroup---cgroup-parent) for the container used in the build | | `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`) | | `labels` | List | List of metadata for an image | | `load` | Bool | [Load](https://docs.docker.com/engine/reference/commandline/buildx_build/#load) is a shorthand for `--output=type=docker` (default `false`) | | `network` | String | Set the networking mode for the `RUN` instructions during build | | `no-cache` | Bool | Do not use cache when building the image (default `false`) | | `no-cache-filters` | List/CSV | Do not cache specified stages | | `outputs` | List | List of [output destinations](https://docs.docker.com/engine/reference/commandline/buildx_build/#output) (format: `type=local,dest=path`) | | `platforms` | List/CSV | List of [target platforms](https://docs.docker.com/engine/reference/commandline/buildx_build/#platform) for build | | `provenance` | Bool/String | Generate [provenance](https://docs.docker.com/build/attestations/slsa-provenance/) attestation for the build (shorthand for `--attest=type=provenance`) | | `pull` | Bool | Always attempt to pull all referenced images (default `false`) | | `push` | Bool | [Push](https://docs.docker.com/engine/reference/commandline/buildx_build/#push) is a shorthand for `--output=type=registry` (default `false`) | | `sbom` | Bool/String | Generate [SBOM](https://docs.docker.com/build/attestations/sbom/) attestation for the build (shorthand for `--attest=type=sbom`) | | `secrets` | List | List of [secrets](https://docs.docker.com/engine/reference/commandline/buildx_build/#secret) to expose to the build (e.g., `key=string`, `GIT_AUTH_TOKEN=mytoken`) | | `secret-envs` | List/CSV | List of [secret env vars](https://docs.docker.com/engine/reference/commandline/buildx_build/#secret) to expose to the build (e.g., `key=envname`, `MY_SECRET=MY_ENV_VAR`) | | `secret-files` | List | List of [secret files](https://docs.docker.com/engine/reference/commandline/buildx_build/#secret) to expose to the build (e.g., `key=filename`, `MY_SECRET=./secret.txt`) | | `shm-size` | String | Size of [`/dev/shm`](https://docs.docker.com/engine/reference/commandline/buildx_build/#shm-size) (e.g., `2g`) | | `ssh` | List | List of [SSH agent socket or keys](https://docs.docker.com/engine/reference/commandline/buildx_build/#ssh) to expose to the build | | `tags` | List/CSV | List of tags | | `target` | String | Sets the target stage to build | | `ulimit` | List | [Ulimit](https://docs.docker.com/engine/reference/commandline/buildx_build/#ulimit) options (e.g., `nofile=1024:1024`) | | `github-token` | String | GitHub Token used to authenticate against a repository for [Git context](#git-context) (default `${{ github.token }}`) | ### outputs The following outputs are available: | Name | Type | Description | |------------|---------|-----------------------| | `imageid` | String | Image ID | | `digest` | String | Image digest | | `metadata` | JSON | Build result metadata | ### environment variables | Name | Type | Description | |---------------------------|------|-------------------------------------------------------------------------------------------------------------------| | `DOCKER_BUILD_NO_SUMMARY` | Bool | If `true`, [build summary](https://docs.docker.com/build/ci/github-actions/build-summary/) generation is disabled | ## Troubleshooting See [TROUBLESHOOTING.md](TROUBLESHOOTING.md) ## Contributing Want to contribute? Awesome! You can find information about contributing to this project in the [CONTRIBUTING.md](/.github/CONTRIBUTING.md)