Added staging network for development deployment

docker-compose.dev.yaml

@@ -0,0 +1,12 @@
+services:
+  traefik:
+    networks:
+      - proxy
+      - staging-network
+networks:
+  legacy-nginx:
+    name: proxy
+    external: true
+  staging-network:
+    name: staging_proxy
+    external: true