Run migrations

Hi. How to resolve this:

```
$ kubectl exec -it sts/master bash
bash-4.4$ bin/tmate remote_console
Node tmate@172.17.0.5 is not running!
bash-4.4$ bin/tmate rpc 'Mix.Task.rerun("ecto.migrate", ["-r", Tmate.Repo, "--migrations-path", "./lib/tmate-0.1.1/priv/repo/migrations"])'
▸  Remote call failed with: :nodedown
```
