Add cs2 base image

base-cs2/Dockerfile

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+FROM debian:bookworm-slim
+
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    rsync \
+    unzip \
+    wget \
+    lib32z1 \
+    locales \
+    && sed -i -e 's/# en_US.UTF-8 UTF-8/en_US.UTF-8 UTF-8/' /etc/locale.gen \
+    && dpkg-reconfigure --frontend=noninteractive locales \
+    && rm -rf /var/lib/apt/lists/* \
+    && useradd -m csgo
+
+USER csgo
+
+RUN mkdir /home/csgo/Steam && \
+    mkdir /home/csgo/server
+
+WORKDIR /home/csgo/Steam
+
+RUN wget -qO- https://steamcdn-a.akamaihd.net/client/installer/steamcmd_linux.tar.gz | tar zxf - \
+    && /home/csgo/Steam/steamcmd.sh +quit \
+    && mkdir -p /home/csgo/.steam/sdk64 \
+    && ln -s /home/csgo/Steam/linux64/steamclient.so /home/csgo/.steam/sdk64/steamclient.so
+
+WORKDIR /home/csgo
+
+COPY server.sh .
+
+ENTRYPOINT ["/home/csgo/server.sh"]
+

base-cs2/server.sh

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+#!/bin/bash
+
+set -e
+
+shopt -s extglob
+
+steam_dir="${HOME}/Steam"
+server_dir="${HOME}/server"
+server_installed_lock_file="${server_dir}/installed.lock"
+cs2_dir="${server_dir}/game/csgo"
+cs2_custom_files_dir="${CS2_CUSTOM_FILES_DIR-"/usr/csgo"}"
+
+
+install() {
+  echo '> Installing or updating game files ...'
+
+  validate=""
+  if [ "${VALIDATE_SERVER_FILES-"false"}" = "true" ]; then
+    echo '> Validating game files ...'
+    validate="validate"
+  fi
+
+  $steam_dir/steamcmd.sh \
+    +force_install_dir $server_dir \
+    +login "${STEAM_USERNAME}" "${STEAM_PASSWORD}" \
+    +app_update 730 ${validate} \
+    +quit
+
+  echo '> Done'
+
+  touch $server_installed_lock_file
+}
+
+sync_custom_files() {
+  echo "> Checking for custom files at \"$cs2_custom_files_dir\" ..."
+
+  if [ -d "$cs2_custom_files_dir" ]; then
+    echo "> Found custom files. Syncing with \"${cs2_dir}\" ..."
+
+    set -x
+
+    cp -asf $cs2_custom_files_dir/* $cs2_dir  # Copy custom files as soft links
+    find $cs2_dir -xtype l -delete            # Find and delete broken soft links
+
+    set +x
+
+    echo '> Done'
+  else
+    echo '> No custom files found'
+  fi
+}
+
+start() {
+  echo '> Starting server ...'
+
+  additionalParams=""
+
+  if [ -n "$CS2_PW" ]; then
+    additionalParams+=" +sv_password $CS2_PW"
+  fi
+
+  set -x
+
+  exec $server_dir/game/bin/linuxsteamrt64/cs2 \
+    -dedicated \
+    -console \
+    -usercon \
+    -maxplayers_override "${CS2_MAX_PLAYERS-16}" \
+    +game_alias "${CS2_GAME_ALIAS-competetive}" \
+    +mapgroup "${CS2_MAP_GROUP-mg_active}" \
+    +map "${CS2_MAP-de_dust2}" \
+    +rcon_password "${CS2_RCON_PW-changeme}" \
+    $additionalParams \
+    $CS2_PARAMS
+}
+
+if [ ! -z $1 ]; then
+  $1
+else
+  install
+  sync_custom_files
+  start
+fi
+