CARRY: Add OCP CI config

Author: mdbooth

.ci-operator.yaml

@@ -0,0 +1,4 @@
+build_root_image:
+  name: release
+  namespace: openshift
+  tag: rhel-8-release-golang-1.21-openshift-4.16

Dockerfile.rhel

@@ -0,0 +1,42 @@
+# Copyright 2019 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Build the manager binary
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.21-openshift-4.16 AS builder
+WORKDIR /workspace
+
+# Run this with docker build --build_arg goproxy=$(go env GOPROXY) to override the goproxy
+ARG goproxy=https://proxy.golang.org
+ENV GOPROXY=$goproxy
+
+# Copy the sources
+COPY ./ ./
+
+# Build
+ARG package=.
+ARG ARCH
+ARG ldflags
+
+# Do not force rebuild of up-to-date packages (do not use -a) and use the compiler cache folder
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=${ARCH} \
+    go build -ldflags "${ldflags} -extldflags '-static'" \
+    -o manager ${package}
+
+# Production image
+FROM registry.ci.openshift.org/ocp/4.16:base
+WORKDIR /
+COPY --from=builder /workspace/manager .
+# Use uid of nonroot user (65532) because kubernetes expects numeric user when applying pod security policies
+USER 65532
+ENTRYPOINT ["/manager"]