chore: update docker examples

docker/app-mariadb/docker-compose.yml

@@ -14,7 +14,7 @@ services:
       - DB_DIALECT=mariadb
       - DB_HOST=mariadb
       - DB_DATABASE=nocobase
-      - DB_USER=nocobase
+      - DB_USER=root
       - DB_PASSWORD=nocobase
       - DB_TIMEZONE=+08:00
       - DB_UNDERSCORED=true
@@ -22,6 +22,7 @@ services:
       - ./storage:/app/nocobase/storage
     ports:
       - "13000:80"
+    init: true
   mariadb:
     image: mariadb:latest
     environment:

docker/app-mysql/docker-compose.yml

@@ -21,6 +21,7 @@ services:
       - ./storage:/app/nocobase/storage
     ports:
       - "13000:80"
+    init: true
   mysql:
     image: mysql:latest
     environment:

docker/app-postgres/docker-compose.yml

@@ -20,6 +20,7 @@ services:
       - "13000:80"
     depends_on:
       - postgres
+    init: true
   postgres:
     image: postgres:10
     restart: always