add rocky linux 9

runon.conf

@@ -34,6 +34,15 @@ dockerfile =
 pkginstall = RUN yum install {} -y
 packages = xterm vim-X11 git python3 bash-completion
 
+[rocky9]
+dockerfile =
+    FROM rockylinux:9
+    RUN dnf install sudo -y
+    RUN echo "Defaults lecture = never" >> /etc/sudoers
+    RUN echo "ALL ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
+pkginstall = RUN dnf install {} -y
+packages = xterm vim-X11 git python3 bash-completion
+
 [debian8]
 dockerfile =
 	  FROM debian:8