docker.yml

name: Docker Build
on: [push]
env:
    DOCKER_REGISTRY_IMAGE: ghcr.io/fortrabbit/craft-copy
    DOCKER_REGISTRY_IMAGE_DEV: ghcr.io/fortrabbit/craft-copy-dev

jobs:
    build:
        name: Build
        runs-on: ubuntu-20.04
        defaults:
            run:
                working-directory: ./docker
        strategy:
            fail-fast: false
            matrix:
                craft_image_tag: ['7.4', '8.0', '8.1']
        steps:
            -   uses: actions/checkout@v3

            -   name: Login to GitHub Container Registry
                uses: docker/login-action@v2
                with:
                    registry: ghcr.io
                    username: ${{ github.repository_owner }}
                    password: ${{ secrets.GITHUB_TOKEN }}

            -   name: Slugify branch name
                shell: bash
                run: echo "branch_slug=$(echo $GITHUB_REF | sed -E 's/refs\/(heads|tags)\///g' | iconv -t ascii//TRANSLIT | sed -E 's/[^a-zA-Z0-9]+/-/g' | sed -E 's/^-+|-+$//g' | tr A-Z a-z)" >> $GITHUB_ENV
                # Usage: ${{ env.branch_slug }}

            -   name: Build docker image
                working-directory: ./docker
                run: |
                    docker build \
                        --build-arg CRAFT_IMAGE_TAG="${{ matrix.craft_image_tag }}" \
                        --tag $DOCKER_REGISTRY_IMAGE:${{ matrix.craft_image_tag }} \
                        --tag $DOCKER_REGISTRY_IMAGE:${{ matrix.craft_image_tag }}_${{ env.branch_slug }} \
                        --tag $DOCKER_REGISTRY_IMAGE_DEV:${{ matrix.craft_image_tag }}_${{ env.branch_slug }} \
                        .

            # Only publish main image (:8.0) on tag push matching "1.0.5" format
            # https://stackoverflow.com/questions/58862864/github-actions-ci-conditional-regex
            -   name: Check if we are on a semantic git tag
                id: check-tag
                run: |
                    if [[ ${{ github.event.ref }} =~ ^refs/tags/[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
                      echo ::set-output name=match::true
                    fi

            # Dev image will contain all builds from all branches
            # ghcr.io/fortrabbit/craft-copy-dev:8.0_main
            # ghcr.io/fortrabbit/craft-copy-dev:8.0_feature-branch
            -   name: Publish dev image
                if: steps.check-tag.outputs.match != 'true'
                run: |
                    docker push $DOCKER_REGISTRY_IMAGE_DEV:${{ matrix.craft_image_tag }}_${{ env.branch_slug }}

            # Main image will contain only builds from semantic tags
            # ghcr.io/fortrabbit/craft-copy:8.0 - removed push to not break old installs of craft-copy that depend on old version of the image
            # ghcr.io/fortrabbit/craft-copy:8.0_1.2.3
            -   name: Publish main image
                if: steps.check-tag.outputs.match == 'true'
                run: |
                    docker push $DOCKER_REGISTRY_IMAGE:${{ matrix.craft_image_tag }}_${{ env.branch_slug }}