Merge pull request #71 from openshift-bot/art-consistency-openshift-4…

….6-golang-github-prometheus-prometheus

Updating golang-github-prometheus-prometheus builder & base images to be consistent with ART

Dockerfile.ocp

@@ -1,4 +1,4 @@
-FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.6 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.6 AS builder
 WORKDIR /go/src/github.com/prometheus/prometheus
 COPY . .
 # NOTE(spasquie): the 'build' target regenerates the ReactJS code and the Go
@@ -9,7 +9,7 @@ COPY . .
 # should be committed to the repository.
 RUN if yum install -y prometheus-promu; then export BUILD_PROMU=false; fi && make common-build
 
-FROM  registry.svc.ci.openshift.org/ocp/builder:rhel-8-base-openshift-4.6
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-base-openshift-4.6
 LABEL io.k8s.display-name="OpenShift Prometheus" \
       io.k8s.description="The Prometheus monitoring system and time series database." \
       io.openshift.tags="prometheus,monitoring" \