chore: fix node_modules volume for docker dev

.devcontainer/docker-compose.extend.yml

@@ -7,5 +7,6 @@ services:
             DJANGO_SETTINGS_MODULE: settings_local_sqlitetest
         volumes:
             - ..:/root/src
+            - /root/src/node_modules
         # Runs app on the same network as the database container, allows "forwardPorts" in devcontainer.json function.
         network_mode: service:db

docker/docker-compose.extend.yml

@@ -5,7 +5,8 @@ services:
         ports:
             - '8000:8000'
         volumes:
-            - ..:/root/src  
+            - ..:/root/src
+            - /root/src/node_modules
     db:
         ports:
             - '3306'