update makefie

Author: siddontang

docker/Makefile

@@ -3,14 +3,16 @@ IMAGE=siddontang/mysql:latest
 all: build
 
 build:
-	@docker pull ${IMAGE}
 	@docker run -d -p 3306:3306 --name=mysql1 -e "GTID_MODE=off" -e "SERVER_ID=1" ${IMAGE}
 	@docker run -d -p 3307:3306 --name=mysql2 -e "GTID_MODE=off" -e "SERVER_ID=2" ${IMAGE}
 	@docker run -d -p 3308:3306 --name=mysql3 -e "GTID_MODE=off" -e "SERVER_ID=3" ${IMAGE}
 	@docker run -d -p 3316:3306 --name=mysql4 -e "GTID_MODE=on" -e "SERVER_ID=4" ${IMAGE}
 	@docker run -d -p 3317:3306 --name=mysql5 -e "GTID_MODE=on" -e "SERVER_ID=5" ${IMAGE}
 	@docker run -d -p 3318:3306 --name=mysql6 -e "GTID_MODE=on" -e "SERVER_ID=6" ${IMAGE}
 
+image:
+	@docker pull ${IMAGE}
+
 stop:
 	@docker stop mysql1 mysql2 mysql3 mysql4 mysql5 mysql6