Installing nginx 1.22 creates the nginx group and nginx user, so instead
of creating them again, modify them.
Signed-off-by: Yang Jiao <jiaoya@vmware.com>
The latest `photon:2.0` does not include `groupadd` and `useradd`
we need to install `shadow` package which includes these commands.
Signed-off-by: He Weiwei <hweiwei@vmware.com>
