mirror of https://github.com/docker/docs.git
build(ci): multi-platform build distribution with bake
Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
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CrazyMax
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@ -153,3 +153,186 @@ jobs:
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run: |
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docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.version }}
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```
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### With Bake
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It's also possible to build on multiple runners using Bake, with the
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[bake action](https://github.com/docker/bake-action).
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You can find a live example [in this GitHub repository](https://github.com/crazy-max/docker-linguist).
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The following example achieves the same results as described in
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[the previous section](#distribute-build-across-multiple-runners).
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```hcl
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variable "DEFAULT_TAG" {
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default = "app:local"
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}
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// Special target: https://github.com/docker/metadata-action#bake-definition
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target "docker-metadata-action" {
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tags = ["${DEFAULT_TAG}"]
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}
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// Default target if none specified
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group "default" {
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targets = ["image-local"]
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}
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target "image" {
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inherits = ["docker-metadata-action"]
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}
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target "image-local" {
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inherits = ["image"]
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output = ["type=docker"]
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}
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target "image-all" {
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inherits = ["image"]
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platforms = [
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"linux/amd64",
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"linux/arm/v6",
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"linux/arm/v7",
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"linux/arm64"
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]
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}
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```
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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:
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- "main"
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env:
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REGISTRY_IMAGE: user/app
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jobs:
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prepare:
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runs-on: ubuntu-latest
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outputs:
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matrix: ${{ steps.platforms.outputs.matrix }}
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steps:
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-
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name: Checkout
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uses: actions/checkout@v3
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-
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name: Create matrix
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id: platforms
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run: |
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echo "matrix=$(docker buildx bake image-all --print | jq -cr '.target."image-all".platforms')" >>${GITHUB_OUTPUT}
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-
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name: Show matrix
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run: |
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echo ${{ steps.platforms.outputs.matrix }}
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build:
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runs-on: ubuntu-latest
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needs:
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- prepare
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strategy:
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fail-fast: false
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matrix:
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platform: ${{ fromJson(needs.prepare.outputs.matrix) }}
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steps:
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-
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name: Checkout
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uses: actions/checkout@v3
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-
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name: Docker meta
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id: meta
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uses: docker/metadata-action@v4
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with:
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images: ${{ env.REGISTRY_IMAGE }}
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-
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name: Rename meta bake definition file
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run: |
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mv "${{ steps.meta.outputs.bake-file }}" "/tmp/bake-meta.json"
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-
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name: Upload meta bake definition
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uses: actions/upload-artifact@v3
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with:
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name: bake-meta
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path: /tmp/bake-meta.json
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if-no-files-found: error
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retention-days: 1
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-
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name: Set up QEMU
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uses: docker/setup-qemu-action@v2
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v2
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-
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name: Login to Docker Hub
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uses: docker/login-action@v2
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with:
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username: ${{ secrets.DOCKERHUB_USERNAME }}
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password: ${{ secrets.DOCKERHUB_TOKEN }}
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-
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name: Build
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id: bake
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uses: docker/bake-action@v3
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with:
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files: |
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./docker-bake.hcl
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/tmp/bake-meta.json
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targets: image
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set: |
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*.tags=
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*.platform=${{ matrix.platform }}
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*.output=type=image,"name=${{ env.REGISTRY_IMAGE }}",push-by-digest=true,name-canonical=true,push=true
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-
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name: Export digest
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run: |
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mkdir -p /tmp/digests
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digest="${{ fromJSON(steps.bake.outputs.metadata).image['containerimage.digest'] }}"
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touch "/tmp/digests/${digest#sha256:}"
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-
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name: Upload digest
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uses: actions/upload-artifact@v3
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with:
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name: digests
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path: /tmp/digests/*
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if-no-files-found: error
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retention-days: 1
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merge:
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runs-on: ubuntu-latest
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needs:
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- build
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steps:
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-
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name: Download meta bake definition
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uses: actions/download-artifact@v3
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with:
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name: bake-meta
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path: /tmp
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-
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name: Download digests
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uses: actions/download-artifact@v3
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with:
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name: digests
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path: /tmp/digests
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-
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name: Set up Docker Buildx
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uses: docker/setup-buildx-action@v2
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-
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name: Login to DockerHub
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uses: docker/login-action@v2
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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: Create manifest list and push
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working-directory: /tmp/digests
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run: |
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docker buildx imagetools create $(jq -cr '.target."docker-metadata-action".tags | map(select(startswith("${{ env.REGISTRY_IMAGE }}")) | "-t " + .) | join(" ")' /tmp/bake-meta.json) \
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$(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)
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-
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name: Inspect image
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run: |
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docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:$(jq -r '.target."docker-metadata-action".args.DOCKER_META_VERSION' /tmp/bake-meta.json)
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```
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