tools/build-docs-container: use the basename of OCI to append args

What we have is OCI = $(which $CONTAINERCMD) = /usr/bin/{docker,podman}.
So we never pass the current if conditions. Compare against the basename
of OCI to pass the checks.

Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
(From yocto-docs rev: 41fc95a0e06fec29cdd8c47f75093f0a6a2df8c0)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/tools/build-docs-container

@@ -154,11 +154,11 @@ main ()
     --security-opt label=disable
   )
 
-  if [ "$OCI" = "docker" ]; then
+  if [ "$(basename "$OCI")" = "docker" ]; then
     args_run+=(
       --user="$(id -u)":"$(id -g)"
     )
-  elif [ "$OCI" = "podman" ]; then
+  elif [ "$(basename "$OCI")" = "podman" ]; then
     # we need net access to fetch bitbake terms
     args_run+=(
       --cap-add=NET_RAW