Ok migration done! It was easier than expected 😀.

So I moved from Ubuntu 16.04 to 18.04 using a new machine. I use docker so I didn't have to rebuild the database, I just copied the files over.

Some stats:

- It took ~1 hour of work.
- In roughly 2 weeks that I've been in Mastodon, my instance has accumulated ~932MB of media and ~19MB database.
- I have not noticed the "downtime" at all, If anyone talked to me or something let me know, but I don't think it happened.