exteral authentication with docker

Hello, I am using 7.9 lpar2rrd as docker image.

It turned out that new MS Edge browsers do not support basic auth popup's. When I access lpar2rrd page I immediately get

Unauthorized

This server could not verify that you are authorized to access the document requested. Either you supplied the wrong credentials (e.g., bad password), or your browser doesn't understand how to supply the credentials required.

No popup for log/pass is visible. I found a workaround to enable basic auth, but it is quite hard to change it on every workstation.

Normally I would implement kerberos authentication in apache, but since I am using docker, changing /etc/http files is not good approach.

Do you have any idea how to address this issue? I had a simmilar problem with accessing https - as a workaround I setup haproxy as frontend with ssl support. This time haproxy wont help, as auth is performed internally by lpar2rrd container.