Automatically deploy docker based services from git repository

gistfile1.txt

#!/bin/bash

# Parse command-line arguments
FORCE=false
while [[ "$#" -gt 0 ]]; do
    case $1 in
        --force) FORCE=true ;;
        *) echo "Unknown parameter passed: $1"; exit 1 ;;
    esac
    shift
done

# Function to check for new commits and pull the latest changes
check_and_pull() {
  if [[ "$FORCE" == true ]]; then
    echo "Force flag detected. Skipping Git check and proceeding with deployment."
    return 0  # Force override, so always proceed
  fi

  echo "Checking for new commits..."
  git fetch origin

  # Compare local and remote branches
  LOCAL_COMMIT=$(git rev-parse HEAD)
  REMOTE_COMMIT=$(git rev-parse origin/$(git rev-parse --abbrev-ref HEAD))

  if [ "$LOCAL_COMMIT" != "$REMOTE_COMMIT" ]; then
    echo "New commits found. Pulling the latest changes..."
    git pull
    return 0  # Return 0 to indicate that new changes were pulled
  else
    echo "No new commits found."
    return 1  # Return 1 to indicate that no new changes were pulled
  fi
}

# Function to process Docker files
process_docker_files() {
  echo "Scanning for Docker deployment files..."

  # Find directories containing docker-stack.yaml or docker-compose.yaml
  find . -type f \( -name "docker-stack.yaml" -o -name "docker-compose.yaml" \) | while read -r file; do
    dir=$(dirname "$file")
    cd "$dir" || continue

    # Generate a valid stack name from the directory name
    stack_name=$(basename "$dir" | tr '[:upper:]' '[:lower:]' | sed 's/[^a-z0-9]//g')

    if [[ -f "docker-stack.yaml" ]]; then
      echo "Found docker-stack.yaml in $(pwd), deploying stack '$stack_name'..."
      docker stack deploy -c docker-stack.yaml "$stack_name" --detach=false --with-registry-auth
    elif [[ -f "docker-compose.yaml" ]]; then
      echo "Found docker-compose.yaml in $(pwd), restarting services..."
      docker-compose down && docker-compose up -d --build
    fi

    cd - > /dev/null  # Return to the previous directory
  done

  echo "All Docker deployments processed."
}

# Main script
echo "Starting the process..."

# Step 1: Check if there are new commits to pull or force deploy
if check_and_pull; then
  # Step 2: Process Docker deployment files
  process_docker_files
else
  echo "Skipping Docker deployments."
fi

echo "Process completed."