FROM debian:bullseye

# Set debconf to run non-interactively and agree to the SteamCMD EULA
RUN echo 'debconf debconf/frontend select Noninteractive' | debconf-set-selections \
	&& echo steam steam/question select "I AGREE" | debconf-set-selections \
    && echo steam steam/license note '' | debconf-set-selections \
    && dpkg --add-architecture i386

# Add contrib and backports
RUN sed -i /etc/apt/sources.list -e 's/main/main contrib non-free/'

RUN echo 'deb http://deb.debian.org/debian bullseye-backports main non-free' >> /etc/apt/sources.list

# Install _only_ the necessary packages
RUN apt-get update && apt-get -y upgrade && apt-get -y install --no-install-recommends \
	nano \
	curl \
    ca-certificates \
    lib32gcc-s1 \
    lib32stdc++6 \
    libcurl4:i386 \
    libsdl2-2.0-0:i386  \
    libcap2 \
    locales \
    procps \
	wget \
	rename \
    steamcmd

# Set the locale
RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen && \
    locale-gen
ENV LANG en_US.UTF-8
ENV LANGUAGE en_US:en
ENV LC_ALL en_US.UTF-8

# steamcmd ends up in /usr/games
ENV PATH /usr/games:${PATH}

# Add the dayzserver to a directory in PATH. Might as well be /usr/games!
ADD files/dayzserver /usr/games

# Setup a non-privileged user
RUN groupadd user && \
    useradd -l -g user user && \
    mkdir /home/user && \
    chown user:user /home/user

# Use our non-privileged user
USER user

# The dayzserver script expects a home directory to itself.
WORKDIR /home/user

# Run the server.
CMD ["dayzserver", "start"]