First problem is with Work Queue Manager, that it does not work in CSP processes. In my project CacheBlocksExplorer, I tried to use it for async scan of database blocks. Here you can find my source, where I use it with WebSocket. Another problem is It does not work as well, if you just have only one core. 

So, you can force set how many jobs use:

Set ^||%ISC.WorkQueueMgr("ForceJobs")=2

Here  on google groups, already did IMAP Ensemble adapter.

Timur already wrote about it some time before. It is works, but not shows any response, before you update the page.

Well, docker container is very good. So, is it possible to get an access to this container, if I don't want to test Atelier with my code on servers outside of my company?

correct link