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docker-build.yaml
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name: Create and publish Docker images with specific build args
on:
workflow_dispatch:
push:
branches:
- main
- dev
tags:
- v*
env:
REGISTRY: ghcr.io
jobs:
build-main-image:
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
strategy:
fail-fast: false
matrix:
platform:
- linux/amd64
- linux/arm64
steps:
# GitHub Packages requires the entire repository name to be in lowercase
# although the repository owner has a lowercase username, this prevents some people from running actions after forking
- name: Set repository and image name to lowercase
run: |
echo "IMAGE_NAME=${IMAGE_NAME,,}" >>${GITHUB_ENV}
echo "FULL_IMAGE_NAME=ghcr.io/${IMAGE_NAME,,}" >>${GITHUB_ENV}
env:
IMAGE_NAME: '${{ github.repository }}'
- name: Prepare
run: |
platform=${{ matrix.platform }}
echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
- name: Checkout repository
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: Log in to the Container registry
uses: docker/login-action@v3
with:
registry: ${{ env.REGISTRY }}
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Extract metadata for Docker images (default latest tag)
id: meta
uses: docker/metadata-action@v5
with:
images: ${{ env.FULL_IMAGE_NAME }}
tags: |
type=ref,event=branch
type=ref,event=tag
type=sha,prefix=git-
type=semver,pattern={{version}}
type=semver,pattern={{major}}.{{minor}}
flavor: |
latest=${{ github.ref == 'refs/heads/main' }}
- name: Extract metadata for Docker cache
id: cache-meta
uses: docker/metadata-action@v5
with:
images: ${{ env.FULL_IMAGE_NAME }}
tags: |
type=ref,event=branch
${{ github.ref_type == 'tag' && 'type=raw,value=main' || '' }}
flavor: |
prefix=cache-${{ matrix.platform }}-
latest=false
- name: Build Docker image (latest)
uses: docker/build-push-action@v5
id: build
with:
context: .
push: true
platforms: ${{ matrix.platform }}
labels: ${{ steps.meta.outputs.labels }}
outputs: type=image,name=${{ env.FULL_IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
cache-from: type=registry,ref=${{ steps.cache-meta.outputs.tags }}
cache-to: type=registry,ref=${{ steps.cache-meta.outputs.tags }},mode=max
build-args: |
BUILD_HASH=${{ github.sha }}
- name: Export digest
run: |
mkdir -p /tmp/digests
digest="${{ steps.build.outputs.digest }}"
touch "/tmp/digests/${digest#sha256:}"
- name: Upload digest
uses: actions/upload-artifact@v4
with:
name: digests-main-${{ env.PLATFORM_PAIR }}
path: /tmp/digests/*
if-no-files-found: error
retention-days: 1
merge-main-images:
runs-on: ubuntu-latest
needs: [build-main-image]
steps:
# GitHub Packages requires the entire repository name to be in lowercase
# although the repository owner has a lowercase username, this prevents some people from running actions after forking
- name: Set repository and image name to lowercase
run: |
echo "IMAGE_NAME=${IMAGE_NAME,,}" >>${GITHUB_ENV}
echo "FULL_IMAGE_NAME=ghcr.io/${IMAGE_NAME,,}" >>${GITHUB_ENV}
env:
IMAGE_NAME: '${{ github.repository }}'
- name: Download digests
uses: actions/download-artifact@v4
with:
pattern: digests-main-*
path: /tmp/digests
merge-multiple: true
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
- name: Log in to the Container registry
uses: docker/login-action@v3
with:
registry: ${{ env.REGISTRY }}
username: ${{ github.actor }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Extract metadata for Docker images (default latest tag)
id: meta
uses: docker/metadata-action@v5
with:
images: ${{ env.FULL_IMAGE_NAME }}
tags: |
type=ref,event=branch
type=ref,event=tag
type=sha,prefix=git-
type=semver,pattern={{version}}
type=semver,pattern={{major}}.{{minor}}
flavor: |
latest=${{ github.ref == 'refs/heads/main' }}
- name: Create manifest list and push
working-directory: /tmp/digests
run: |
docker buildx imagetools create $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
$(printf '${{ env.FULL_IMAGE_NAME }}@sha256:%s ' *)
- name: Inspect image
run: |
docker buildx imagetools inspect ${{ env.FULL_IMAGE_NAME }}:${{ steps.meta.outputs.version }}