[NTG-context] can’t make a format with LMTX (Docker/linuxmusl)

Hi, I tried to install LMTX/linuxmusl in a Docker container, installation seems to work ("context --version" looks good), but making the format fails with some Lua errors, e.g. loading > ConTeXt Token support / helpers … toks-aux.lmt:273: … operation on a nil value (field 'glyph') I don’t know if that’s musl or Docker related, I’ve no clue about these. Should I provide a full log? Hraban