make deployments not compulsory

assessment_module_manager/assessment_module_manager/env.py

@@ -3,6 +3,7 @@
 
 from assessment_module_manager.deployment import list_deployments
 from assessment_module_manager.module.list_modules import list_modules
+from assessment_module_manager.logger import logger
 
 PRODUCTION = os.environ.get("PRODUCTION", "0") == "1"
 
@@ -18,8 +19,9 @@
 for deployment in list_deployments():
     secret = os.environ.get(f"ARTEMIS_{deployment.name.upper()}_SECRET")
     if secret is None and PRODUCTION:
-        raise ValueError(f"Missing secret for Artemis deployment {deployment.name}. "
-                         f"Set the {deployment.name.upper()}_SECRET environment variable to secure the communication "
-                         f"between the LMS and the assessment module manager.")
+        logger.warning("Missing secret for Artemis deployment %s. "
+                       "Set the %s_SECRET environment variable to secure the communication "
+                       "between the LMS and the assessment module manager.",
+                       deployment.name, deployment.name.upper())
     secret = "abcdef12345"  # noqa: This secret is only used for development setups for simplicity
     DEPLOYMENT_SECRETS[deployment.url] = secret