docker-build-push.yaml

name: Docker Build and Push

env:
  docker_repository: "rayyansys/kutt"

on:
  push:
    branches:
      - develop
    tags:
      - 'v*'

jobs:
  docker-build-push:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v2
      -
        name: Determine target image name
        id: image-name
        run: |
          IMAGE_ID=ghcr.io/${{ env.docker_repository }}

          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # Strip "v" prefix from tag name
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')

          # Use Docker `latest` tag convention
          [ "$VERSION" == "develop" ] && VERSION=latest

          IMAGES=
          IMAGES="$IMAGE_ID:$VERSION"$'\n'$IMAGES

          # debug output
          echo images $IMAGES
          echo ::set-output name=images::"$IMAGES"
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v1
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
      -
        name: Login to docker registry
        uses: docker/login-action@v1 
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      -
        name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          platforms: linux/amd64,linux/arm64,linux/arm/v7
          push: true
          tags: ${{ steps.image-name.outputs.images }}