name: Build Base App Docker Image

on:
  push:
    branches:
      - 'main'
    paths:
      - 'docker/base.Dockerfile'
      - 'requirements.txt'

  workflow_dispatch:

jobs:
  publish:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      packages: write

    steps:
    - uses: actions/checkout@v4

    - name: Set Version
      run: |
        printf -v CURDATE '%(%Y%m%d%H%M)' -1
        echo "IMGVERSION=$CURDATE" >> $GITHUB_OUTPUT

    - name: Set up QEMU
      uses: docker/setup-qemu-action@v3
    
    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v3

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v3
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Docker Build & Push
      uses: docker/build-push-action@v6
      env:
        DOCKER_BUILD_NO_SUMMARY: true
      with:
        context: .
        file: docker/base.Dockerfile
        platforms: linux/amd64,linux/arm64
        push: true
        tags: |
          ghcr.io/ietf-tools/datatracker-app-base:${{ env.IMGVERSION }}
          ghcr.io/ietf-tools/datatracker-app-base:latest

    - name: Update version references
      run: |
        sed -i "1s/.*/FROM ghcr.io/ietf-tools/datatracker-app-base:${{ env.IMGVERSION }}/" dev/build/Dockerfile

    - name: Commit CHANGELOG.md
      uses: stefanzweifel/git-auto-commit-action@v5
      with:
        branch: main
        commit_message: 'ci: update base image target version to ${{ env.IMGVERSION }}'
        file_pattern: dev/build/Dockerfile