docker-toontown-rewritten/ISSUES.md

on some hosts:

libGL: dlopen /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so failed (/tmp/_MEIsdYgjK/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by /usr/lib/x86_64-linux-gnu/dri/swrast_dri.so))

possible workaround, seems to slow down game though:

ENV LD_PRELOAD=$LD_PRELOAD:/usr/lib/x86_64-linux-gnu/libstdc++.so.6:${LD_PRELOAD}

unclear why issue occurs on some hosts only