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processing-segmenter-build.yml
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name: Build Docker container image for the segmenter
on:
push:
branches:
- 'main'
- 'beta'
- 'stable'
tags:
- 'v*'
pull_request:
paths:
- 'processing/segmenter/**'
- '.github/workflows/processing-segmenter-*.yml'
merge_group:
workflow_dispatch:
inputs:
git-ref:
description: 'Git ref (optional)'
required: false
env:
IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}
IMAGE_NAME: 'device-backend-processing-segmenter'
MAIN_BRANCH: 'main' # pushing to this branch will update the "edge" tag on the image
BETA_BRANCH: 'beta' # pushing to this branch will update the "beta" tag on the image
STABLE_BRANCH: 'stable' # pushing to this branch will update the "stable" tag on the image
TAG_PREFIX: 'v' # pushing tags with this prefix will add a version tag to the image and update the "latest" tag on the image
PUSH_IMAGE: ${{ (github.event_name == 'pull_request' && !github.event.pull_request.head.repo.fork) || github.event_name == 'push' || github.event_name == 'push tag' }}
jobs:
build-container-image:
runs-on: ubuntu-latest
permissions:
contents: read
packages: write
strategy:
fail-fast: false
matrix:
platform:
- linux/amd64
- linux/arm64
- linux/arm/v7
steps:
- uses: actions/checkout@v4
# Work around a bug where capital letters in the GitHub username (e.g. "PlanktoScope") make it
# impossible to push to GHCR. See https://github.com/macbre/push-to-ghcr/issues/12
- name: Lowercase image registry and owner
id: image_registry_case
uses: ASzc/change-string-case-action@v6
with:
string: ${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}
# Build and publish Docker container image
- name: Get Docker metadata
id: meta
uses: docker/metadata-action@v5
with:
images: ${{ steps.image_registry_case.outputs.lowercase }}
tags: |
type=sha # this sha doesn't appear to correspond to the git sha
- 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 GitHub Container Registry
if: env.PUSH_IMAGE == 'true'
uses: docker/login-action@v3
with:
registry: ghcr.io
username: ${{ github.repository_owner }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Build and push by digest
id: build
uses: docker/build-push-action@v5
with:
context: ./processing/segmenter
pull: true
platforms: ${{ matrix.platform }}
labels: ${{ steps.meta.outputs.labels }}
cache-from: type=gha,scope=processing-segmenter-build-${{ matrix.platform }}
cache-to: type=gha,mode=max,scope=processing-segmenter-build-${{ matrix.platform }}
outputs: type=image,name=${{ steps.image_registry_case.outputs.lowercase }},push-by-digest=true,name-canonical=true,push=${{ env.PUSH_IMAGE }}
- name: Export digest
run: |
mkdir -p /tmp/digests
digest="${{ steps.build.outputs.digest }}"
touch "/tmp/digests/${digest#sha256:}"
- name: Determine digest name
run: |
platform=${{ matrix.platform }}
echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
- name: Upload digest
uses: actions/upload-artifact@v4
with:
name: digests-${{ env.PLATFORM_PAIR }}
path: /tmp/digests/*
if-no-files-found: error
retention-days: 1
merge-container-images:
runs-on: ubuntu-latest
needs:
- build-container-image
steps:
- name: Download digests
uses: actions/download-artifact@v4
with:
path: /tmp/digests
pattern: digests-*
merge-multiple: true
# Work around a bug where capital letters in the GitHub username (e.g. "PlanktoScope") make it
# impossible to push to GHCR. See https://github.com/macbre/push-to-ghcr/issues/12
- name: Lowercase image registry and owner
id: image_registry_case
uses: ASzc/change-string-case-action@v6
with:
string: ${{ env.IMAGE_REGISTRY }}/${{ env.IMAGE_NAME }}
- name: Get actual commit SHA
# Get the SHA of the actual commit (not the fake merge commit) on PR-triggered runs
# (refer to https://stackoverflow.com/a/68068674/23202949):
run: |
if [[ -n "${{ github.event.pull_request.head.sha }}" ]]; then
printf "ACTUAL_SHA=%.7s" "${{ github.event.pull_request.head.sha }}" >> $GITHUB_ENV
elif [[ ${{ env.PUSH_IMAGE }} = "true" ]]; then
printf "ACTUAL_SHA=%.7s" "${{ github.sha }}" >> $GITHUB_ENV
fi
# Build and publish Docker container image
- name: Get Docker metadata
id: meta
uses: docker/metadata-action@v5
env:
IS_MAIN_BRANCH: ${{ github.ref == format('refs/heads/{0}', env.MAIN_BRANCH) }}
IS_BETA_BRANCH: ${{ github.ref == format('refs/heads/{0}', env.BETA_BRANCH) }}
IS_STABLE_BRANCH: ${{ github.ref == format('refs/heads/{0}', env.STABLE_BRANCH) }}
with:
images: ${{ steps.image_registry_case.outputs.lowercase }}
tags: |
type=match,pattern=${{ env.TAG_PREFIX }}(.*),group=1 # this implicitly updates latest
type=raw,value=stable,enable=${{ env.IS_STABLE_BRANCH }},priority=702
type=raw,value=beta,enable=${{ env.IS_BETA_BRANCH }},priority=701
type=edge,branch=${{ env.MAIN_BRANCH }}
type=ref,event=pr
type=raw,value=sha-${{ env.ACTUAL_SHA }},enable=${{ env.ACTUAL_SHA != '' }},priority=100
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
- name: Log in to GitHub Container Registry
if: env.PUSH_IMAGE == 'true'
uses: docker/login-action@v3
with:
registry: ghcr.io
username: ${{ github.repository_owner }}
password: ${{ secrets.GITHUB_TOKEN }}
- name: Create manifest list and push
if: env.PUSH_IMAGE == 'true'
working-directory: /tmp/digests
run: |
docker buildx imagetools create \
$(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
$(printf '${{ steps.image_registry_case.outputs.lowercase }}@sha256:%s ' *)
- name: Inspect image
if: env.PUSH_IMAGE == 'true'
run: |
docker buildx imagetools inspect \
${{ steps.image_registry_case.outputs.lowercase }}:${{ steps.meta.outputs.version }}