# Copyright 2020 Misha Brukman
# SPDX-License-Identifier: Apache-2.0
# https://misha.brukman.net/blog/2020/04/running-decade-old-games-in-containers/

FROM ubuntu:14.04

# Add 32-bit support to a 64-bit Ubuntu or Debian system:
#     https://support.gog.com/hc/en-us/articles/213039665
# Without this line, `apt-get` will not be able to find the packages below.
RUN dpkg --add-architecture i386

RUN apt-get update && \
    apt-get install -y \
        libasound2-data:i386 \
        libasound2:i386 \
        libasound2-plugins:i386 \
        libc6:i386 \
        libcanberra-gtk-module:i386 \
        libgtk2.0-0:i386 \
        libnss3:i386 \
        libxml2:i386

# Create a non-root user to run games with reduced permissions.
# Note: you can set any username you want here; it doesn't matter.
ENV USER=user
ENV HOME=/home/$USER
RUN useradd -ms /bin/bash $USER
# Note: the `docker run` command in `runner.sh` expects this user to have
# UID=1000; if you change it here, update it there as well.
RUN usermod --uid 1000 "$USER"
RUN groupmod --gid 1000 "$USER"

# Drop root permissions; all commands from now on will be executed as a
# regular user, so be sure to do anything requiring root permissions prior to
# this line.
USER $USER

# Declare that we will mount two directories into this container at runtime,
# one for the source media and one for the installation folder.
VOLUME /opt/game/source
VOLUME /opt/game/install

# Saved games will be stored in a subdirectory of `$HOME`, so let's just
# mount the whole home directory.
VOLUME $HOME