fix: update network configuration to use 'backend' instead of dynamic deployment name

docker-compose-coolify.yml

@@ -1,4 +1,3 @@
-version: "3.9"
 services:
   app:
     build:
@@ -47,7 +46,7 @@ services:
       - "traefik.http.services.${DEPLOYMENT_NAME:-learnhouse}.loadbalancer.server.port=80"
       - "traefik.http.routers.${DEPLOYMENT_NAME:-learnhouse}.tls=true"
     networks:
-      - ${DEPLOYMENT_NAME:-learnhouse}-network
+      - backend
       - traefik
 
   db:
@@ -67,7 +66,7 @@ services:
       timeout: 4s
       retries: 5
     networks:
-      - ${DEPLOYMENT_NAME:-learnhouse}-network
+      - backend
 
   redis:
     image: redis:7.2.3
@@ -87,7 +86,7 @@ services:
       timeout: 4s
       retries: 5
     networks:
-      - ${DEPLOYMENT_NAME:-learnhouse}-network
+      - backend
 
   chromadb:
     image: chromadb/chroma:0.5.16
@@ -100,7 +99,7 @@ services:
       timeout: 5s
       retries: 5
     networks:
-      - ${DEPLOYMENT_NAME:-learnhouse}-network
+      - backend
 
 volumes:
   postgres-data:
@@ -108,7 +107,7 @@ volumes:
   app-uploads:
 
 networks:
-  ${DEPLOYMENT_NAME:-learnhouse}-network:
+  backend:
     name: ${DEPLOYMENT_NAME:-learnhouse}-network
     driver: bridge
   traefik: