fix base docker image name refs #29848

.gitlab-ci.yml

-image: registry.ubicast.net/pod-client
+image: registry.ubicast.net/web/pod-client
 
 stages:
   - build_docker

Makefile

 DOCKER_REGISTRY ?= registry.ubicast.net
-DOCKER_IMG ?= ${DOCKER_REGISTRY}/pod-client
+DOCKER_IMG ?= ${DOCKER_REGISTRY}/web/pod-client
 
 build:
 	docker build -t ${DOCKER_IMG} .