Add dnf clean all

Author: mnasiadka

elements/rocky-container-stackhpc/containerfiles/9-stackhpc

@@ -7,6 +7,7 @@ ARG ROCKY_BASEOS_URL
 
 RUN if [ ${ROCKY_USE_MIRROR} = "true" ]; then \
     dnf -y install 'dnf-command(config-manager)' && \
+    dnf clean all && \
     mkdir /tmp/orig_repos && mv -f /etc/yum.repos.d/* /tmp/orig_repos/ && \
     dnf config-manager --add-repo ${ROCKY_APPSTREAM_URL} && \
     dnf config-manager --add-repo ${ROCKY_BASEOS_URL} && \