docker-image.yaml

name: Docker

on:
  push:
    # Publish `main` and `stable` as Docker `latest` image.
    branches:
      - main
      - '[0-9]+.X-stable'
    # Publish `v1.2.3` tags as releases.
    tags:
      - 'v*'
      - 'v[0-9]+.[0-9]+.[0-9]-stable'

env:
  IMAGE_NAME: frinx/sample-topology
  # DOCKER_CONTENT_TRUST: 1

jobs:
  push:
    runs-on: ubuntu-latest
    if: github.event_name == 'push'

    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0

      #### Set tags based on source type ####

      - name: Set tag for latest image
        if: github.ref_type == 'branch' && startsWith(github.ref, 'refs/heads/main')
        run: |
          echo "IMAGE_TAG=$(echo 'latest')" >> "$GITHUB_ENV"

      - name: Set tag for stable-latest image
        if: github.ref_type == 'branch' && endsWith(github.ref, '-stable')
        run: |
          echo "IMAGE_TAG=$(echo 'stable-latest')" >> "$GITHUB_ENV"

      - name: Set tag for stable-release image
        if: github.ref_type == 'tag' && endsWith(github.ref, '-stable')
        run: |
          echo "IMAGE_TAG=$(echo $GITHUB_REF | cut -d / -f 3 | sed -e 's/^v//' | sed -e 's/-stable//')" >> "$GITHUB_ENV"

      - name: Set tag for release image
        if: ${{ github.ref_type == 'tag' && !endsWith(github.ref, '-stable') }}
        run: |
          echo "IMAGE_TAG=$(echo $GITHUB_REF | cut -d / -f 3 | sed -e 's/^v//')" >> "$GITHUB_ENV"

      - name: Build image
        run: docker build . --file Dockerfile --build-arg git_commit=$(git rev-parse HEAD) --tag $IMAGE_NAME:${IMAGE_TAG}

      - name: Log into docker hub
        run: echo "${{ secrets.DOCKER_HUB_PASSWORD }}" | docker login -u ${{ secrets.DOCKER_HUB_USERNAME }} --password-stdin

      - name: Push image
        run: |
          docker push $IMAGE_NAME:${IMAGE_TAG}