docker-compose-merge.py

# Use to merge docker files together and output them as one single file.
# Usage: python docker_compose_combine.py -f docker-compose1.yaml -f docker-compose2.yaml

# Courtesy of our good friend ChatGPT.


import argparse
import yaml
from collections import OrderedDict

def combine_compose_files(files):
    combined_data = OrderedDict({'version': '3', 'services': {}})

    for file in files:
        with open(file, 'r') as f:
            data = yaml.safe_load(f)
            if 'services' in data:
                combined_data['services'].update(data['services'])

    return combined_data

def main():
    parser = argparse.ArgumentParser(description='Combine multiple Docker Compose files into a single YAML file')
    parser.add_argument('-f', '--file', action='append', dest='files', required=True,
                        help='Specify one or more Docker Compose files to combine', metavar='FILE')
    args = parser.parse_args()

    combined_data = combine_compose_files(args.files)

    print(yaml.dump(combined_data, default_flow_style=False))

if __name__ == '__main__':
    main()