fix AsyncAPI handling on Docker startup (#2227)

Author: tomkralidis

docker/entrypoint.sh

@@ -93,8 +93,7 @@ echo "openapi.yml generated continue to pygeoapi"
 echo "Trying to generate asyncapi.yml"
 /venv/bin/pygeoapi asyncapi generate ${PYGEOAPI_CONFIG} --output-file ${PYGEOAPI_ASYNCAPI}
 
-[[ $? -ne 0 ]] && error "asyncapi.yml could not be generated ERROR"
-echo "asyncapi.yml generated continue to pygeoapi"
+[[ $? -ne 0 ]] && echo "asyncapi.yml could not be generated; skipping"
 
 start_gunicorn() {
     # SCRIPT_NAME should not have value '/'

pygeoapi/asyncapi.py

@@ -222,8 +222,8 @@ def load_asyncapi_document() -> dict:
     if not os.path.exists(pygeoapi_asyncapi):
         msg = (f'AsyncAPI document {pygeoapi_asyncapi} does not exist.  '
                'Please generate before starting pygeoapi')
-        LOGGER.error(msg)
-        raise RuntimeError(msg)
+        LOGGER.warning(msg)
+        return {}
 
     with open(pygeoapi_asyncapi, encoding='utf8') as ff:
         if pygeoapi_asyncapi.endswith(('.yaml', '.yml')):