Error building wheel

[AlwxSin]

Trying to make a multi-stage build with python:3.7.2-alpine docker image. First I make a wheel for devtools with pip wheel devtools --wheel-dir=wheels/. Then, in the next stage, install wheel pip install wheels/*. But I got an error that devtools-0.5-py35,py36-none-any.whl is not a supported wheel on this platform.

The problem is in this piece - py35,py36. There should be a period, not a comma.