docker-publish.yml

name: Build and Push Multi-Arch Docker image

on:
  push:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout the code
      uses: actions/checkout@v2

    - name: Set up Docker Buildx
      uses: docker/setup-buildx-action@v2

    - name: Log in to Docker Hub
      uses: docker/login-action@v2
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

    - name: Get version
      id: version
      run: |
        VERSION=$(cat version.txt)
        echo "Version from file: ${VERSION}"
        echo "VERSION=${VERSION}" >> ${GITHUB_OUTPUT}

    - name: Fail if tag already exists
      run: |
        TAG="v${{ steps.version.outputs.version }}"
        if git ls-remote --tags origin "refs/tags/$TAG" | grep "$TAG" > /dev/null; then
          echo "❌ Tag $TAG already exists. Aborting."
          exit 1
        fi

    - name: Build and push Docker image (multi-arch)
      uses: docker/build-push-action@v5
      with:
        context: docker
        platforms: linux/amd64,linux/arm64
        push: true
        cache-from: type=gha
        cache-to: type=gha,mode=max
        tags: |
          ${{ secrets.DOCKER_USERNAME }}/speedtest-monitor:latest
          ${{ secrets.DOCKER_USERNAME }}/speedtest-monitor:${{ steps.version.outputs.VERSION }}

    - name: Create tag if it doesn't exist
      run: |
        git config user.name "github-actions"
        git config user.email "github-actions@github.com"
        git tag "v${{ steps.version.outputs.version }}"
        git push origin "v${{ steps.version.outputs.version }}"