✨ Bring back docker support #197

This is such an incredible project I still can't believe it's real. The documentation is very good and I really like the approach the repo's owners is taking to manage this project. I'm also aware that this is still very new but despite of that the project and documentation has reached the current amazing levels. I see that in order to achieve such excellency the strategy code has been heavily customized and has a similar but still different process that the suggested process by Freqtrade. This has caused some challenges to move quickly forward even though so far I've managed quite well with the documentation provided. I still have a suggestion that I think would help to these that want to move the bot live.

Is it possible to document a suggested deployment steps in similar fashion to the documentation seen in Freqtrade? More specifically in my case, I'm very confused on how to deploy a dockerized bot so it can run live on a remote system (or systems) such as my cluster of Raspberry Pi.

Very much appreciated and I hope this question fits properly as a Github issue.