Details about how to build hstream through docker

- How to build Haskell projects by docker? ( with some extra shared library, e.g., logdevice, zookeeper
- How to make Haskell-Language-Server work?
- If I want to edit locally and build remotely, show me the steps.

FAQs:

- Q: Why my hls doesn't find hsc2hs but cabal build success?
- A: Short answer: run `cabal install hsc2hs`