Fix postgres DNS: put both services on dokploy-network

Co-authored-by: Cursor <cursoragent@cursor.com>

docker-compose.yml

@@ -1,5 +1,5 @@
 services:
-  # IMPORTANT for Dokploy: attach domain to this service, port 8000
+  # Domain in Dokploy → service `panel`, port `8000`
   panel:
     build:
       context: .
@@ -22,10 +22,11 @@ services:
       ADMIN_PASSWORD: ${ADMIN_PASSWORD:-change-me-strong-password}
       ADMIN_EMAIL: ${ADMIN_EMAIL:-admin@example.com}
 
+      POSTGRES_HOST: ${POSTGRES_HOST:-postgres}
       POSTGRES_USER: ${POSTGRES_USER:-vpn}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-vpn}
       POSTGRES_DB: ${POSTGRES_DB:-vpn_panel}
-      DATABASE_URL: ${DATABASE_URL:-postgresql+asyncpg://vpn:vpn@postgres:5432/vpn_panel}
+      POSTGRES_PORT: ${POSTGRES_PORT:-5432}
 
       PUBLIC_HOST: ${PUBLIC_HOST:-127.0.0.1}
       PUBLIC_PORT: ${PUBLIC_PORT:-51820}
@@ -43,13 +44,13 @@ services:
       - wg_data:/data/wireguard
       - awg_data:/data/amneziawg
     networks:
-      - vpn_net
+      - dokploy-network
     healthcheck:
       test: ["CMD", "curl", "-f", "http://127.0.0.1:8000/health"]
       interval: 15s
       timeout: 5s
       retries: 10
-      start_period: 90s
+      start_period: 120s
 
   postgres:
     image: postgres:16-alpine
@@ -61,16 +62,17 @@ services:
     volumes:
       - postgres_data:/var/lib/postgresql/data
     networks:
-      - vpn_net
+      - dokploy-network
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U $$POSTGRES_USER -d $$POSTGRES_DB"]
       interval: 5s
       timeout: 5s
-      retries: 10
+      retries: 20
+      start_period: 10s
 
 networks:
-  vpn_net:
-    driver: bridge
+  dokploy-network:
+    external: true
 
 volumes:
   postgres_data: