title: Unable into cd in to docker folder in /etc
body: <p>I'm learning about docker and I cannot seem to cd into the docker folder. I'm in etc folder and I'm trying to enter docker folder. It's blue text indicating it's a directory and I am able to enter into other blue directorys.   </p>
  
  <pre><code>DIR_COLORS               makedumpfile.conf.sample  ssh
  DIR_COLORS.256color      man_db.conf               ssl
  DIR_COLORS.lightbgcolor  mime.types                statetab
  dnsmasq.conf             mke2fs.conf               statetab.d
  dnsmasq.d                modprobe.d                subgid
  docker                   modules-load.d            subuid
  dracut.conf              motd                      sudo.conf
  dracut.conf.d            mtab    
  </code></pre>
  
  <p>I even try sudo cd docker.<br>
  But when I do this, the command line does nothing. I can ls the folder to see it's contents as below:  </p>
  
  <pre><code>[user@bucephalus1 etc]$ sudo ls -al docker
  total 16
  drwx------.   2 root root   21 Mar 22 01:07 .
  drwxr-xr-x. 103 root root 8192 Mar 24 10:57 ..
  -rw-------.   1 root root  244 Mar 22 01:07 key.json
  </code></pre>
  
  <p>But I cannot cd into docker as seen below: </p>
  
  <pre><code>[user@bucephalus1 etc]$ sudo ls -al docker
  total 16
  drwx------.   2 root root   21 Mar 22 01:07 .
  drwxr-xr-x. 103 root root 8192 Mar 24 10:57 ..
  -rw-------.   1 root root  244 Mar 22 01:07 key.json
  [user@bucephalus1 etc]$ sudo cd docker
  [user@bucephalus1 etc]$
  </code></pre>
  
  <p>Does anyone have any idea on what is happening here?</p>