I will need to create users so developers can log in and clone/pull/push changes/repositories from a github like platform.

I've managed to add a user (using the root) to this CentOS machine; I now have this line in /etc/passwd:

chris:x:32008:32010::/home/chris/public_html:/bin/bash

..and this in /etc/shadow:

chris:$1$ruUeLtTu$onAY2hdu1J.UmHajEIlmR.:15385:0:99999:7:::

I am able to SSH the server, I have permission to create a folder and I guess that should be enough. But I am able to see other files and folders outside public_html.

How can I actually restrict the user to a particular directory so he can't "cd out" of his folder?

Update:

root@echo [~]# ls -ld /home/moove
drwx--x--x 21 moove moove 4096 Mar 22 16:16 /home/moove/
root@echo [~]# ls -ld /home/moove/public_html
drwxr-x--- 11 moove nobody 4096 Mar 27 11:29 /home/moove/public_html/
root@echo [~]# ls -ld /home/moove/public_html/dev
drwxr-x--- 12 moove nobody 4096 Mar 27 14:47 /home/moove/public_html/dev/
root@echo [~]# ls -ld /home/moove/public_html/dev/arsenal
drwxr-xr-x 3 arsenal moove 4096 Mar 27 14:53 /home/moove/public_html/dev/arsenal/