添加docker容器化部署，配置区分dev和prod环境

mall-admin/src/main/resources/application-dev.properties

@@ -0,0 +1,5 @@
+#===datasource start===
+spring.datasource.url=jdbc:mysql://localhost:3306/mall
+spring.datasource.username=root
+spring.datasource.password=root
+#===datasource end===