Fix postgresql version

ohbarye · ohbarye · commit fbfd8763bbc4 · 2020-05-22T11:52:09.000+09:00
diff --git a/docker-compose.yml b/docker-compose.yml
@@ -1,7 +1,7 @@
 version: '3'
 services:
   db:
-    image: postgres
+    image: postgres:11
     volumes:
       - ./tmp/db:/var/lib/postgresql/data
   backend:
