udocker.yml

name: Check Dockerfile Base Image Updates

on:
  schedule:
    - cron: '0 0 * * *'  # Run daily
  workflow_dispatch:  # Allows manual triggering of the workflow

jobs:
  check-updates:
    runs-on: ubuntu-latest

    steps:
    - name: Checkout code
      uses: actions/checkout@v4

    - name: Check for base image updates
      id: check
      run: |
        # Read the current base image from the Dockerfile
        BASE_IMAGE=$(grep -oP 'FROM \K.*' Dockerfile)
        echo "Base image from Dockerfile: $BASE_IMAGE"
        
        IMAGE_NAME=$(echo $BASE_IMAGE | cut -d':' -f1)
        echo "Image name extracted: $IMAGE_NAME"
        
        CURRENT_TAG=$(echo $BASE_IMAGE | cut -d':' -f2)
        echo "Current tag extracted: $CURRENT_TAG"

        # Fetch tags from Docker Hub
        TAGS_JSON=$(wget -q https://registry.hub.docker.com/v1/repositories/$IMAGE_NAME/tags -O -)
        echo "Tags fetched from Docker Hub: $TAGS_JSON"

        # Parse the tags and find the latest one
        LATEST_TAG=$(echo $TAGS_JSON | jq -r "[.[] | select(.name | test(\"^$CURRENT_TAG[.]\")) | .name] | max_by(split(\".\") | map(tonumber))")
        
        if [ -z "$LATEST_TAG" ]; then
          echo "No newer tags found for the image $IMAGE_NAME with the tag starting $CURRENT_TAG."
          echo "updated=false" >> $GITHUB_ENV
        else
          echo "A newer base image tag is available: $LATEST_TAG"
          sed -i "s|$BASE_IMAGE|$IMAGE_NAME:$LATEST_TAG|g" Dockerfile
          
          # Check the Dockerfile after sed operation
          echo "Dockerfile updated content:"
          cat Dockerfile
          
          # Use environment file to set the output
          echo "updated=true" >> $GITHUB_ENV
          echo "new_tag=$LATEST_TAG" >> $GITHUB_ENV
        fi

    - name: Commit and push if Dockerfile changed
      if: env.updated == 'true'
      run: |
        git config --global user.name 'github-actions'
        git config --global user.email 'github-actions@github.com'
        git add Dockerfile
        git commit -m "