Right off the bat, this is the issue:
$ dokku mysql:create app
mkdir: cannot create directory ‘/home/git’: Permission denied
Dumb founded... Here's what I did:
I went to Digital Ocean and got a Dokku server. From there I set it up by simply going to the IP and pushing the blue button.
I then followed this guide except that I made a deviation with the dokku mysql plugin.
Let me know if you need anymore information. Will happily update my question per a comment.
Key Question: How do I set up a MySQL DB given that I am having the above error?