chore: remove vestigial docker group

Author: bsherman

server-changes.sh

@@ -11,6 +11,10 @@ if [[ ${IMAGE} =~ ucore ]]; then
     # ensure no moby-engine packages, we can use sysext if needed
     $DNF remove -y containerd docker-buildx docker-cli docker-compose moby-engine runc
 
+    # remove group created by moby
+    sed -i '/^docker:/d' /etc/group
+    sed -i '/^docker:/d' /usr/lib/group
+
     # Temporarily remove cockpit-zfs plugin
     rm -vfr /usr/share/cockpit/zfs \
           /usr/share/polkit-1/actions/*zfs* \