optimize dockerfile

Signed-off-by: panxunying <[email protected]>

Author: panxunying

Makefile

@@ -7,7 +7,7 @@ export PATH := $(PWD)/bin:$(PATH)
 
 VERSION ?= $(shell ./scripts/git-version)
 
-DOCKER_REPO=quay.io/dexidp/dex
+DOCKER_REPO=ccr.ccs.tencentyun.com/koderover-rc/dex
 DOCKER_IMAGE=$(DOCKER_REPO):$(VERSION)
 
 $( shell mkdir -p bin )