Fixing docker-compose -files

docker-compose.prod.yml

@@ -42,7 +42,7 @@ services:
       context: ./frontend
       dockerfile: Dockerfile
       args:
-        - VUE_APP_API_URL=${VUE_APP_API_URL:-http://localhost:8080}
+        - VUE_APP_API_URL=${VUE_APP_API_URL:-http://localhost:${BACKEND_PORT:-8080}}
     container_name: inventory-frontend-prod
     ports:
       - "${FRONTEND_PORT:-3000}:80"

docker-compose.yml

@@ -47,7 +47,7 @@ services:
     ports:
       - "${FRONTEND_PORT:-3000}:80"
     environment:
-      - VUE_APP_API_URL=${VUE_APP_API_URL:-http://localhost:8080}
+      - VUE_APP_API_URL=${VUE_APP_API_URL:-http://localhost:${BACKEND_PORT:-8080}}
     depends_on:
       backend:
         condition: service_healthy