Support for Ubuntu 22.04

Change-Id: I1a443bb3ea2634f22308707828eb45d138bad4cd
Signed-off-by: SANDHYA.JS <sandhya.j@tataelxsi.co.in>
diff --git a/Dockerfile b/Dockerfile
index d092886..d0fd0ba 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,7 +21,7 @@
 #   devops-stages/stage-build.sh
 #
 
-FROM ubuntu:20.04
+FROM ubuntu:22.04
 
 ARG APT_PROXY
 RUN if [ ! -z $APT_PROXY ] ; then \