rename Dockerfile.rhel to Dockerfile.rhel7 and multi-stage build

Author: zshi-redhat

Dockerfile.rhel

@@ -0,0 +1,20 @@
+FROM registry.svc.ci.openshift.org/ocp/builder:golang-1.10 AS builder
+
+ADD . /usr/src/sriov-network-device-plugin
+
+WORKDIR /usr/src/sriov-network-device-plugin
+
+ENV HTTP_PROXY $http_proxy
+ENV HTTPS_PROXY $https_proxy
+RUN make clean && \
+    make build
+
+FROM registry.svc.ci.openshift.org/ocp/4.0:base
+COPY --from=builder /usr/src/sriov-network-device-plugin/build/sriovdp /usr/bin/
+WORKDIR /
+
+LABEL io.k8s.display-name="SRIOV Network Device Plugin"
+
+ADD ./images/entrypoint.sh /
+
+ENTRYPOINT ["/entrypoint.sh"]