FROM ubuntu
RUN apt-get update \
 && apt-get install -yq wget build-essential file cpio rsync bc unzip python3
WORKDIR /
RUN wget https://github.com/buildroot/buildroot/archive/2022.02.tar.gz \
 && tar xf *.gz \
 && rm -fv *.gz \
 && mv -fv buildroot-* build
WORKDIR /build
ADD config-seed .config
RUN make olddefconfig \
 && make toolchain