Added openshift Dockerfile with multi-stage support

Signed-off-by: Eduard Kracmar <eduard.kracmar@hotovo.org>

openshift-ms.Dockerfile

@@ -0,0 +1,56 @@
+FROM golang:1.13.12-alpine3.12 as registry_builder
+
+RUN apk --no-cache add \
+    git \
+    make \
+    sqlite \
+    gcc \
+    libc-dev
+
+ENV REGISTRY_TAG v1.5.6
+
+WORKDIR /src
+
+RUN git clone https://github.com/operator-framework/operator-registry.git /tmp/registry \
+    && cd /tmp/registry \
+    && git reset --hard ${REGISTRY_TAG} \
+    && mv vendor cmd pkg Makefile go.mod go.sum /src \
+    && cd /src \
+    && make build
+
+# copy and build vendored grpc_health_probe
+RUN mkdir -p /go/src/github.com/grpc-ecosystem && \
+    cp -R vendor/github.com/grpc-ecosystem/grpc-health-probe /go/src/github.com/grpc-ecosystem/grpc_health_probe && \
+    cp -R vendor/ /go/src/github.com/grpc-ecosystem/grpc_health_probe && \
+    cd /go/src/github.com/grpc-ecosystem/grpc_health_probe && \
+    CGO_ENABLED=0 go install -a -tags netgo -ldflags "-w"
+
+FROM alpine:3.12 as bundles_builder
+
+WORKDIR /registry
+
+COPY --from=registry_builder /src/bin/ /usr/local/bin
+COPY upstream-community-operators manifests
+
+RUN initializer --permissive -o ./bundles.db
+
+# Final runtime image
+FROM alpine:3.12
+
+WORKDIR /registry
+
+COPY --from=registry_builder /src/bin/registry-server /usr/local/bin
+COPY --from=registry_builder /go/bin/grpc-health-probe /usr/local/bin/
+COPY --from=bundles_builder /registry/bundles.db /registry/bundles.db
+
+RUN chgrp -R 0 /registry && \
+    chgrp -R 0 /dev && \
+    chmod -R g+rwx /registry && \
+    chmod -R g+rwx /dev
+
+# This image doesn't need to run as root user
+USER 1001
+
+EXPOSE 50051
+ENTRYPOINT ["/usr/local/bin/registry-server"]
+CMD ["--database", "/registry/bundles.db"]