build.yml

name: Build and Push Docker image to ghcr.io

on:
  push:
    branches:
      - main

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read

    steps:
      # Step 1: Checkout the repository
      - name: Checkout repository
        uses: actions/checkout@v3

      # Step 2: Log in to GitHub Container Registry (GHCR)
      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Step 3: Define dynamic image name and tag based on repo name
      - name: Set dynamic image name and tag
        id: vars
        run: |
          REPO_NAME=$(basename "${{ github.repository }}") # Extract the repository name
          IMAGE_NAME="ghcr.io/${{ github.repository_owner }}/$REPO_NAME"
          GIT_SHA="${{ github.sha }}"
          TAG="main-${GIT_SHA:0:7}" # Example: Use first 7 characters of commit SHA
          echo "IMAGE_NAME=$IMAGE_NAME" >> $GITHUB_ENV
          echo "IMAGE_TAG=$TAG" >> $GITHUB_ENV

      # Step 4: Build the Docker image
      - name: Build Docker image
        run: |
          docker build -t $IMAGE_NAME:$IMAGE_TAG .

      # Step 5: Push the Docker image to GitHub Container Registry
      - name: Push Docker image to GHCR
        run: |
          docker push $IMAGE_NAME:$IMAGE_TAG