Show How To Become Root (#676)

* Show How To Become Root

I just realized I could not do certain things from a sudo. I needed to be root via "sudo /bin/bash". I know this is a trival issue, but I am intermediate at handling the terminal and needed to know this.

* Revise Command Used To Become Root

Revised 'sudo /bin/bash' to 'sudo -i' to become root

Running-Mastodon/Production-guide.md

@@ -47,6 +47,9 @@ The records added are:
 ## Dependency Installation
 
 All dependencies should be installed as root.
+```
+sudo -i
+```
 
 ## Extend Ubuntu repositories when using Ubuntu 18.04.1 LTS