I noticed that devtoolset-8-dockerfiles contains obsolete docker files from the DTS 7 era and nobody seems to care. We now use a different repository for them anyway: <pkgs.devel.redhat.com/containers/devtoolset-8-toolchain>.
So either we should update them for DTS 8.1, or drop it completely.
Looks like the way forward is to drop the dockerfiles and use the github repo instead.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.