Use doublequotes

pica-codimd/docker-compose.yml

-version: '3.7'
+version: "3.7"
 
 networks:
   proxy:
@@ -8,10 +8,9 @@ networks:
 
 volumes:
   codimd-db:
-    name: 'codimd-db'
+    name: "codimd-db"
   codimd-data:
-    name: 'codimd-data'
-
+    name: "codimd-data"
 
 services:
   codimd-db: