docs: Updated "VPP with Containers" use-case section

Type: improvement

Modified "VPP with Containers" doc section to run on Ubuntu 22.04 LTS.

Change-Id: Ic09b88cf0e3b492711222a1bb24552de964a7d03
Signed-off-by: hsandid <halsandi@cisco.com>
diff --git a/docs/usecases/containers/containerSetup.rst b/docs/usecases/containers/containerSetup.rst
index 8c458f7..31b8171 100644
--- a/docs/usecases/containers/containerSetup.rst
+++ b/docs/usecases/containers/containerSetup.rst
@@ -18,10 +18,9 @@
 
 .. code-block:: console
 
-    root@cone:/# resolvconf -d eth0
     root@cone:/# dhclient
-    root@cone:/# apt-get install -y wget
-    root@cone:/# echo "deb [trusted=yes] https://nexus.fd.io/content/repositories/fd.io.ubuntu.xenial.main/ ./" | sudo tee -a /etc/apt/sources.list.d/99fd.io.list
+    root@cone:/# apt-get install -y curl
+    root@cone:/# curl -s https://packagecloud.io/install/repositories/fdio/release/script.deb.sh | sudo bash
     root@cone:/# apt-get update
     root@cone:/# apt-get install -y --force-yes vpp
     root@cone:/# sh -c 'echo  \"\\ndpdk {\\n   no-pci\\n}\" >> /etc/vpp/startup.conf'