diff --git a/deploy/Dockerfile_dev b/deploy/Dockerfile_dev
index d248af528..def999a46 100644
--- a/deploy/Dockerfile_dev
+++ b/deploy/Dockerfile_dev
@@ -13,7 +13,7 @@ RUN echo '#!/bin/sh\npip install --no-cache-dir --no-deps -r /phovea/requirement
 RUN chmod +x /tmp/entrypoint.sh
 ENTRYPOINT [ "/tmp/entrypoint.sh" ]
 
-# Default command is to start the server in debug mode
-CMD [ "python -m debugpy --listen 0.0.0.0:5678 -m uvicorn tdp_core.server.main:app --reload --host 0.0.0.0 --port 9000"]
+# Default command is to start the server
+CMD [ "python -m uvicorn tdp_core.server.main:app --reload --host 0.0.0.0 --port 9000" ]
 
 EXPOSE 9000
\ No newline at end of file
diff --git a/deploy/docker-compose-debug.partial.yml b/deploy/docker-compose-debug.partial.yml
index 36371c660..1b0d56602 100644
--- a/deploy/docker-compose-debug.partial.yml
+++ b/deploy/docker-compose-debug.partial.yml
@@ -2,4 +2,7 @@ version: '2.0'
 services:
   db_mongo:
     ports:
-      - '27017:27017'
\ No newline at end of file
+      - '27017:27017'
+  api:
+    # Override the default server command to add a debugging process. This causes the app to run slower, therefore it is optional.
+    command: 'python -m debugpy --listen 0.0.0.0:5678 -m uvicorn tdp_core.server.main:app --reload --host 0.0.0.0 --port 9000'
\ No newline at end of file
diff --git a/tdp_core/dbmanager.py b/tdp_core/dbmanager.py
index 444ddc8fd..29b8bd05f 100644
--- a/tdp_core/dbmanager.py
+++ b/tdp_core/dbmanager.py
@@ -94,10 +94,10 @@ def create_web_session(self, engine_or_id: Union[Engine, str]) -> Session:
         session = self.create_session(engine_or_id)
 
         try:
-            existing_session = get_request().state.db_sessions
+            existing_sessions = get_request().state.db_sessions
         except (KeyError, AttributeError):
-            existing_session = []
-            get_request().state.db_sessions = existing_session
-        existing_session.append(session)
+            existing_sessions = []
+            get_request().state.db_sessions = existing_sessions
+        existing_sessions.append(session)
 
         return session