Hi! I've noticed the doc references postgres for setting up data storage (https://labelstud.io/guide/storedata.html). However, I was wondering whether it's possible to switch to other databases such as MySQL for the same task. If so, more or less how'd the process be? I'm trying to set up label-studio and the environment I'm using only allows MySQL DBs.

Thanks!

My actions before raising this issue

• Read/searched the docs
• Searched past issues

Proposal

Now we are using default [drf-yasg](https://github.com/a

How to reproduce the behaviour

The error occurs in the Step 5/9 of the docker build process

fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.11/community/x86_64/APKINDEX.tar.gz
WARNING: Ignoring http://dl-cdn.alpinelinux.org/alpine/v3.11/main/x86_64/APKINDEX.tar.gz: BAD signature
WARNING: Ignoring http

Add a way to change the sample id output in the annotation process to a specific number (see picture).

Reason: I want to annotate large text and the app don't like it when the documents to annotate are too large, so I spitted in a sentence the document but I would like to be able to

What?

Currently, API manually throws its own messages and errors. We should move them to werkzeug exceptions.

allowTouch should be true by default, however, the fact that it disables scrolling can feel very janky.

It should have an intuitive toggling mechanism - i.e. only allow annotation creation when the image is clicked at least once (focusing on image)

This is a collection of smaller GUI and UX things:

1. Making User & Sys response boxes bigger (resizable)
2. Improving File Naming Style
3. Improving css in general.