snigdhaos-docker/.github/workflows/snigdhaos-docker.yml

name: Snigdha OS Docker Image

on:
  workflow_dispatch:
  schedule:
    - cron: '30 05 * * *'  # Cron schedule for automatic builds (adjust as needed)
  push:
    branches:
      - master

jobs:
  docker:
    runs-on: ubuntu-latest

    steps:
      # Checkout repository
      - name: Checkout repository
        uses: actions/checkout@v4

      # Set up QEMU for multi-architecture builds
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      # Set up Docker Buildx for advanced builds (multi-arch, caching)
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      # Login to Docker Hub using secrets for security
      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      # Cache Docker layers to speed up build time
      - name: Cache Docker layers
        uses: actions/cache@v3
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      # Build and push Docker image (only for amd64 platform now)
      - name: Build Docker image
        id: build
        uses: docker/build-push-action@v4
        with:
          context: ./snigdhaos  # Ensure the Dockerfile is inside the snigdhaos directory
          push: true
          tags: ${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:latest  # Add your Docker Hub username here
          platforms: linux/amd64  # Only build for amd64
          cache-to: type=inline  # Use inline caching
          cache-from: type=registry,ref=${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:latest  # Use cached layers from Docker Hub

      # Add a check to confirm that the image was built and tagged correctly
      - name: Verify Docker image exists
        run: |
          echo "Checking if snigdhaos:latest image exists"
          docker images -q ${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:latest || echo "Image not found"
      
      # Check if build succeeded and tag Docker image with version based on the latest Git tag
      - name: Tag Docker image with version
        if: success()  # Only proceed if the build was successful
        run: |
          VERSION=$(git tag -l | tail -n 1 || echo "latest")  # Get the latest tag or fallback to "latest"
          
          # Ensure VERSION is not empty, default to "latest" if it's empty
          if [ -z "$VERSION" ]; then
            VERSION="latest"
          fi
          
          # Verify if the image exists before tagging
          if docker image inspect ${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:latest > /dev/null 2>&1; then
            echo "Image exists, tagging with version: $VERSION"
            docker tag ${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:latest ${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:${VERSION}
            docker push ${{ secrets.DOCKERHUB_USERNAME }}/snigdhaos:${VERSION}
          else
            echo "Docker image not found, skipping tag and push."
            exit 1  # Fail the step if the image does not exist