Merge pull request #2119 from infosiftr/ghost-mysql-8

Update Ghost example to MySQL 8

ghost/stack.yml

@@ -23,7 +23,7 @@ services:
       #NODE_ENV: development
 
   db:
-    image: mysql:5.7
+    image: mysql:8.0
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: example