Fixed dockerfile

docker-compose.yml

@@ -1,15 +1,24 @@
-version: "3.9"
+version: '3.8'
+
 services:
+  backend:
+    build: ./backend
+    container_name: schiri-backend
+    ports:
+      - "3000:3000"
+    networks:
+      - schiri-net
+
   frontend:
     build: ./frontend
-    container_name: frontend
+    container_name: schiri-frontend
     ports:
       - "5001:80"
     depends_on:
       - backend
+    networks:
+      - schiri-net
 
-  backend:
-    build: ./backend
-    container_name: backend
-    expose:
-      - "3000"
+networks:
+  schiri-net:
+    driver: bridge

frontend/nginx.conf

@@ -7,7 +7,7 @@ server {
 
   # API wird intern an Express weitergereicht
   location ^~ /api/ {
-    proxy_pass http://backend:3000/;
+    proxy_pass http://schiri-backend:3000/;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection keep-alive;