[CI][DOCKER] real fix on RHEL build

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

cmake_targets/tools/build_helper

@@ -41,7 +41,7 @@ KERNEL_VERSION=$(uname -r | cut -d '.' -f1)
 KERNEL_MAJOR=$(uname -r | cut -d '.' -f2)
 
 #check if we run inside a container
-IS_CONTAINER=`egrep -c "docker|podman|kubepods" /proc/self/cgroup || true`
+IS_CONTAINER=`egrep -c "docker|podman|kubepods|libpod|buildah" /proc/self/cgroup || true`
 #sudo is not needed when we are root
 if [ "$UID" = 0 ]
 then