split compose file

docker-compose.pgsql.yml

@@ -0,0 +1,11 @@
+services:
+    pgsql:
+        container_name: pgsql
+        environment:
+        - POSTGRES_PASSWORD=example
+        image: postgres:latest
+        ports:
+        - 5432:5432
+        restart: unless-stopped
+        volumes:
+        - /opt/pgsql:/var/lib/postgresql/data