podman unshare: document that command cannot be used with remote
Fixes
podman\-unshare - Run a command inside of a modified user namespace
## SYNOPSIS
-**podman unshare** [*--*] [*command*]
+**podman unshare** [*options*] [*command*]
## DESCRIPTION
Launches a process (by default, *$SHELL*) in a new user namespace. The user
@@ -24,6 +24,8 @@ The unshare session defines two environment variables:
- **CONTAINERS_GRAPHROOT**: the path to the persistent container's data.
- **CONTAINERS_RUNROOT**: the path to the volatile container's data.
+*IMPORTANT: This command is not available with the remote Podman client.*
+
## OPTIONS
#### **--help**, **-h**
