rocker/binder example build error

[trybik]

Bug description

myBinder example does not build

Expected behaviour

A launched Jupyter RStudio session on a myBinder infrastructure

Actual behaviour

The build produces the chown: invalid user: 'jovyan' error as seen in the screenshot:

How to reproduce

1. Go to https://mybinder.org/v2/gh/rocker-org/binder/master?urlpath=rstudio

Your personal set up

mybinder on-line infrastructure

[welcome[bot]]

Thank you for opening your first issue in this project! Engagement like this is essential for open source projects! :hugs:
If you haven't done so already, check out Jupyter's Code of Conduct. Also, please try to follow the issue template as it helps other other community members to contribute more effectively. You can meet the other Jovyans by joining our Discourse forum. There is also an intro thread there where you can stop by and say Hi! :wave:
Welcome to the Jupyter community! :tada:

[julou]

same problem here when following rocker's instructions at https://hub.docker.com/r/rocker/binder and when trying the example build too.

[julou]

After a few trials and errors, it seems that the issue was introduced with rocker/binder:4.0.0

Using the same Dockerfile but changing only the image version: rocker/binder:3.6.3 => works rocker/binder:4.0.0 => this bug rocker/binder:4.0.2 => this bug