rely on brew image for downstream

Dockerfile.downstream

@@ -2,6 +2,9 @@
 ARG TARGETARCH=amd64
 ARG COMMIT
 
+# Make kubectl & oc scripts available for copy
+FROM brew.registry.redhat.io/openshift4/ose-cli-rhel9:v4.17.0-202412032103.p0.g13001b0.assembly.stream.el9 as ose-cli
+
 # Build the manager binary
 FROM brew.registry.redhat.io/rh-osbs/openshift-golang-builder:v1.22.5-202407301806.g4c8b32d.el9 as builder
 
@@ -25,12 +28,6 @@ COPY .mk/ .mk/
 # Build collector
 RUN GOARCH=$TARGETARCH make compile
 
-# Install oc to allow collector to run commands
-RUN set -x; \
-    OC_TAR_URL="https://mirror.openshift.com/pub/openshift-v4/$(uname -m)/clients/ocp/latest/openshift-client-linux.tar.gz" && \
-    curl -L -q -o /tmp/oc.tar.gz "$OC_TAR_URL" && \
-    tar -C /tmp -xvf /tmp/oc.tar.gz oc kubectl
-
 # Embedd commands in case users want to pull it from collector image
 RUN USER=netobserv VERSION=main make oc-commands
 
@@ -40,10 +37,14 @@ RUN mkdir -p output
 # Create final image from ubi + built binary and command
 FROM --platform=linux/$TARGETARCH registry.access.redhat.com/ubi9/ubi:9.4
 WORKDIR /
+
 COPY --from=builder /opt/app-root/build .
 COPY --from=builder /tmp/oc /usr/bin/oc
-COPY --from=builder /tmp/kubectl /usr/bin/kubectl
 COPY --from=builder --chown=65532:65532 /opt/app-root/output /output
+
+COPY --from=ose-cli /kubectl /usr/bin/kubectl
+COPY --from=ose-cli /oc /usr/bin/oc
+
 USER 65532:65532
 
 ENTRYPOINT ["/network-observability-cli"]