#38 The messages aren't stored on the server as files. This is due to the use of archive2 instead of just archive as the prosody mam man page tells:
> Legacy message archive
>
> Early versions of mod_mam (which were available in [prosody-modules](https://prosody.im/community_modules)) stored data in a store called 'archive2'. This store is now just called 'archive'.
>
> mod_mam can be instructed to use the older store name if you still have data there.
>
> archive_store = "archive2"; -- the old data
> storage = {
> archive2 = "sql";
> }
* Add environment variables for Database configuration.
* Install postgres and mysql dependencies.
* Test refactoring
* Run tests for prosody with postgres and also for prosody with sqlite.
* Add tests that check if postgres or sqlite is used.
