Corrected mistake in docker-compose.yml

Go/docker-compose.yml

@@ -5,7 +5,7 @@ services:
       context: .
       dockerfile: Dockerfile
     ports:
-      - '0.0.0.0:${PORT}:${PORT}'
+      - '${PORT}:0.0.0.0:${PORT}'
     restart: unless-stopped
     environment:
       PORT: ${PORT}