FROM debian

# install emacs + clang + clangd as LSP.
ENV DEBIAN_FRONTEND=noninteractive

RUN apt update && \
    apt install -y emacs build-essential git make cmake clang clang-format clangd && \
    apt clean all && \
    rm -rf /var/lib/apt/lists/*

# copy emacs config
COPY emacs-init /root/.emacs

# install emacs packages by running once beforehand,
# so we don't have to that every start-up
RUN emacs --batch -l /root/.emacs \
    --eval "(package-refresh-contents)" \
    --eval "(package-install-selected-packages)"


ENTRYPOINT ["/bin/emacs", "-nw"]