Merge pull request #1130 from cyphar/separate-domainname-flag

cli: add a separate --domainname flag

docs/reference/commandline/create.md

@@ -53,6 +53,7 @@ Options:
       --dns value                     Set custom DNS servers (default [])
       --dns-option value              Set DNS options (default [])
       --dns-search value              Set custom DNS search domains (default [])
+      --domainname string             Container NIS domain name
       --entrypoint string             Overwrite the default ENTRYPOINT of the image
   -e, --env value                     Set environment variables (default [])
       --env-file value                Read in a file of environment variables (default [])

docs/reference/commandline/run.md

@@ -57,6 +57,7 @@ Options:
       --dns value                     Set custom DNS servers (default [])
       --dns-option value              Set DNS options (default [])
       --dns-search value              Set custom DNS search domains (default [])
+      --domainname string             Container NIS domain name
       --entrypoint string             Overwrite the default ENTRYPOINT of the image
   -e, --env value                     Set environment variables (default [])
       --env-file value                Read in a file of environment variables (default [])

docs/reference/run.md

@@ -256,7 +256,7 @@ The UTS namespace is for setting the hostname and the domain that is visible
 to running processes in that namespace.  By default, all containers, including
 those with `--network=host`, have their own UTS namespace.  The `host` setting will
 result in the container using the same UTS namespace as the host.  Note that
-`--hostname` is invalid in `host` UTS mode.
+`--hostname` and `--domainname` are invalid in `host` UTS mode.
 
 You may wish to share the UTS namespace with the host if you would like the
 hostname of the container to change as the hostname of the host changes.  A
@@ -396,8 +396,8 @@ network stack and all interfaces from the host will be available to the
 container.  The container's hostname will match the hostname on the host
 system. Note that `--mac-address` is invalid in `host` netmode. Even in `host`
 network mode a container has its own UTS namespace by default. As such
-`--hostname` is allowed in `host` network mode and will only change the
-hostname inside the container.
+`--hostname` and `--domainname` are allowed in `host` network mode and will
+only change the hostname and domain name inside the container.
 Similar to `--hostname`, the `--add-host`, `--dns`, `--dns-search`, and
 `--dns-option` options can be used in `host` network mode. These options update
 `/etc/hosts` or `/etc/resolv.conf` inside the container. No change are made to