publish-snapshot.yml

name: Publish Snapshot

env:
  IMAGE_NAME: ghcr.io/anitrend/edge-graphql
  CACHE_REF: ghcr.io/anitrend/edge-graphql:cache

on:
  workflow_dispatch:
    inputs:
      branch:
        description: "Git ref to build (branch or tag)"
        required: true
      image-tag:
        description: "Override the Docker tag (defaults to sanitized branch)"
        required: false

jobs:
  build-snapshot:
    name: Build Snapshot Image
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Resolve ref
        id: resolve
        env:
          INPUT_BRANCH: ${{ github.event.inputs.branch }}
          WORKFLOW_REF: ${{ github.ref }}
        run: |
          if [[ -n "$INPUT_BRANCH" ]]; then
            ref="$INPUT_BRANCH"
          else
            ref=$(echo "$WORKFLOW_REF" | sed -E 's#^refs/(heads|tags)/##')
          fi
          echo "ref=$ref" >> "$GITHUB_OUTPUT"
      - name: Derive image tag
        id: tag
        env:
          TAG_OVERRIDE: ${{ github.event.inputs.image-tag }}
          SOURCE_REF: ${{ steps.resolve.outputs.ref }}
        run: |
          if [[ -n "$TAG_OVERRIDE" ]]; then
            tag="$TAG_OVERRIDE"
          else
            base="$SOURCE_REF"
            base="${base,,}"
            tag=$(echo "$base" | sed -E 's/[^a-z0-9._-]+/-/g' | sed -E 's/^-+|-+$//g')
            if [[ -z "$tag" ]]; then
              tag="manual-snapshot"
            fi
            tag=${tag:0:120}
          fi
          echo "tag=$tag" >> "$GITHUB_OUTPUT"
      - name: Checkout code
        uses: actions/checkout@v7
        with:
          ref: ${{ steps.resolve.outputs.ref }}
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v4
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v4
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v4
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build and push snapshot image
        uses: docker/build-push-action@v7
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          cache-from: type=registry,ref=${{ env.CACHE_REF }}
          cache-to: type=registry,ref=${{ env.CACHE_REF }},mode=max
          tags: ${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.tag }}
      - name: Summarize snapshot
        run: |
          cat <<SUMMARY >> "$GITHUB_STEP_SUMMARY"
          SUMMARY