Merge pull request #5066 from ranjithrajaram/devel-doc

[CI:DOCS] Protocol can be specified with --port. Ex. --port 514/udp

docs/buildah-config.1.md

@@ -182,12 +182,15 @@ This option is typically only meaningful when the image's OS is Windows, and is
 typically set in Windows base images, so using this option is usually
 unnecessary.
 
-**--port**, **-p** *port*
+**--port**, **-p** *port/protocol*
 
 Add a *port* to expose when running containers based on any images which
 will be built using the specified container. Can be used multiple times.
-If *port* has a trailing `-`, and is already set, then the *port* is removed from the config.
-If the port is set to "-" then all exposed ports settings are removed from the config.
+To specify whether the port listens on TCP or UDP, use "port/protocol".
+The default is TCP if the protocol is not specified. To expose the port on both TCP and UDP,
+specify the port option multiple times. If *port* has a trailing `-` and is already set,
+then the *port* is removed from the configuration. If the port is set to `-` then all exposed
+ports settings are removed from the configuration.
 
 **--shell** *shell*
 
@@ -255,6 +258,8 @@ buildah config --volume /usr/myvol- containerID
 
 buildah config --port 1234 --port 8080 containerID
 
+buildah config --port 514/tcp --port 514/udp containerID
+
 buildah config --env 1234=5678 containerID
 
 buildah config --env 1234- containerID