feat(skopeo): Add skopeo utililty to rhel9-based workbenches

Related-to: https://issues.redhat.com/browse/RHOAIENG-19497

Author: andyatmiami

rstudio/rhel9-python-3.11/Dockerfile.cpu

@@ -12,7 +12,7 @@ RUN pip install --no-cache-dir -U "micropipenv[toml]"
 USER root
 
 # Install usefull OS packages
-RUN dnf install -y mesa-libGL && dnf clean all && rm -rf /var/cache/yum
+RUN dnf install -y mesa-libGL skopeo && dnf clean all && rm -rf /var/cache/yum
 
 # Other apps and tools installed as default user
 USER 1001

rstudio/rhel9-python-3.11/Dockerfile.cuda

@@ -12,7 +12,7 @@ RUN pip install --no-cache-dir -U "micropipenv[toml]"
 USER root
 
 # Install usefull OS packages
-RUN dnf install -y mesa-libGL && dnf clean all && rm -rf /var/cache/yum
+RUN dnf install -y mesa-libGL skopeo && dnf clean all && rm -rf /var/cache/yum
 
 # Other apps and tools installed as default user
 USER 1001