ConEmu: vi/vim does not work in docker container

Versions

ConEmu build: 170402{Preview} x64 OS version: Windows 10 x64 Used shell version: powershell/git bash/cmd + bash in container

Problem description

In docker container, vi or vim, arrow keys doe not work.

Steps to reproduce

1. Install docker on windows
2. run docker run -it alpine bash
3. vi anyfile
4. Do edit, move with arrow keys

Actual results

(1) Cannot move cursor with powershell in comemu. (2) Works fine with powershell of windows for the same.

Expected results