Allow Mounting Custom OpenAPI YAML file

[Youssef-Harby]

Is your feature request related to a problem? Please describe.

Yes, when I mount a custom openapi.yml into the geopython/pygeoapi Docker image, it gets overwritten by the entrypoint.sh script, which always generates a new openapi.yml at startup.

Describe the solution you'd like

Modify the entrypoint.sh script to check if an openapi.yml or PYGEOAPI_OPENAPI already exists before generating one. If a custom file is present, the script should skip the generation step.

Additional context

Allowing custom openapi.yml files to persist enhances flexibility. I'm willing to submit a PR with the necessary changes.

[Youssef-Harby]

I made a workaround for now to make it works in the docker compose file :

  pygeoapi:
    container_name: pygeoapi
    image: geopython/pygeoapi:latest
    volumes:
      - ./pygeoapi-config.yml:/pygeoapi/local.config.yml
      - ./openapi-auth.yml:/pygeoapi/openapi.yml:ro
    ports:
      - 80
    environment:
      - SCRIPT_NAME=/api
      - PYGEOAPI_CONFIG=/pygeoapi/local.config.yml
      - PYGEOAPI_OPENAPI=/pygeoapi/openapi.yml
    depends_on:
      - redis
      - caddy
      - authelia
    networks:
      - caddy
    entrypoint: []
    command: gunicorn --workers 4 --worker-class gevent --timeout 6000 --name pygeoapi --bind 0.0.0.0:80 pygeoapi.flask_app:APP