Firmware compilation fails under Docker (Windows) with missing GLIBC_2.27 about crow

[beels]

Note that if I check out v3.0.1, I get similar error messages about missing files in build/, but the compilation succeeds and the resulting binary works fine when installed on crow.

I've been trying to get this working too, to add a lil' custom teensyLC module to the ii devices :)
and I think the issue is the Docker file?

Using this as Dockerfile in the main directory seems to get v4.0.1 to compile:

FROM ubuntu:bionic

RUN apt-get update && \
    apt-get install -y --no-install-recommends software-properties-common && \
    add-apt-repository ppa:team-gcc-arm-embedded/ppa -y && \
    apt-get update && \
    apt-get install -y --no-install-recommends \
    build-essential \
    bzip2 \
    dfu-util \
    gcc-arm-embedded \
    git \
    libreadline-dev \
    unzip \
    zip \
    xxd \
    wget && \
    rm -rf /var/lib/apt/lists/*

RUN wget --quiet https://www.lua.org/ftp/lua-5.3.4.tar.gz -O lua.tar.gz
RUN tar -xzf lua.tar.gz && \
    cd lua-5.3.4 && \
    make linux test && \
    make install && \
    cd ..

WORKDIR /target
ENTRYPOINT ["make", "-j", "R=1", "zip"]

It just updates the ubuntu release (fixing GLIBC_2.27 error) and adds the xxd package. Things then seem to move a bit further in compiling but v4.0.3 and main still seem to fail. The earlier No such file or directory error messages are still there at the start of the output, but then there's this final error at the end of the output:

lib/l_bootstrap.c:53:54: error: initializer element is not constant
     , { "lua_hotswap"   , build_hotswap_lc   , true, build_hotswap_lc_len}
                                                      ^~~~~~~~~~~~~~~~~~~~
lib/l_bootstrap.c:53:54: note: (near initialization for 'Lua_libs[13].len')
Makefile:274: recipe for target 'lib/l_bootstrap.o' failed
make: *** [lib/l_bootstrap.o] Error 1