Drop multistage docker build + remove test step
Drop multistage docker build + remove test step

No point using multistage build as we can't have a lightweight
environment due to the entangled dependencies of the WS server + dev
webpack server

willprice/vimflowy,WuTheFWasThat/vimflowy,willprice/vimflowy,willprice/vimflowy,WuTheFWasThat/vimflowy