fix docker image name

Author: smuzaffar

docker_launcher.sh

@@ -88,7 +88,7 @@ if [ "X$DOCKER_IMG" != X -a "X$RUN_NATIVE" = "X" ]; then
   fi
   if [ "${DOCKER_LAUNCHER_NO_OVERRIDE}" != "true" ] ; then
     case $DOCKER_IMG in
-      cmssw/el8:*) DOCKER_IMG="${DOCKER_IMG}-d20260519" ;;
+      cmssw/el8:x86_64|cmssw/el8:aarch64) DOCKER_IMG="${DOCKER_IMG}-d20260519" ;;
       * ) ;;
     esac
   fi