Migrate to LANCommander base image with hook-based install

Replace bash entrypoint with LANCommander PostInitialization hook
(20-InstallServer.ps1) that downloads server binaries, extracts them,
and patches the master server INI. Update Dockerfile to build from
lancommander/base:latest with SERVER_URL/START_EXE/START_ARGS env vars.
Update documentation to reflect new OverlayFS-based directory layout,
security requirements, and hook extension points.

Author: pathartl

Dockerfile

@@ -1,58 +1,38 @@
 # syntax=docker/dockerfile:1.7
 
-FROM debian:bookworm-slim
+FROM lancommander/base:latest
 
-# Runtime directories (mount these as volumes)
-ENV CONFIG_DIR=/config
+ENV SERVER_URL="https://s3.amazonaws.com/ut2004-files/dedicated-server-3339-bonuspack.tar.gz"
 
-# Server settings
-ENV SERVER_PORT=7777
-ENV SERVER_ARGS=""
+ENV START_EXE="System/ucc-bin"
+ENV START_ARGS="-ini=SystemSettings.ini -ini=UT2004.ini -ini=UT2004Server.ini"
 
 # ----------------------------
 # Dependencies
 # ----------------------------
-# Enable multiarch for 32-bit libraries
-RUN dpkg --add-architecture i386 && \
-  apt-get update && apt-get install -y --no-install-recommends \
+RUN apt-get update && apt-get install -y --no-install-recommends \
     ca-certificates \
     curl \
+    bzip2 \
     tar \
-    gzip \
-    gosu \
+    unzip \
+    xz-utils \
+    p7zip-full \
+    gosu
+
+RUN dpkg --add-architecture i386 && \
+  apt-get update && apt-get install -y --no-install-recommends \
+    libc6-i386 \
     lib32gcc-s1 \
     lib32stdc++6 \
-    libc6-i386 \
+    libstdc++5:i386 \
   && rm -rf /var/lib/apt/lists/*
 
-# Install libstdc++5 (32-bit) for UT2004 - download from Debian archive
-# Note: libstdc++5 is not available in bookworm, so we download from an older Debian release
-RUN set -eux; \
-  apt-get update; \
-  libstdc5_url="https://archive.debian.org/debian/pool/main/g/gcc-3.3/libstdc++5_3.3.6-20_i386.deb"; \
-  curl -fsSL "${libstdc5_url}" -o /tmp/libstdc++5.deb; \
-  dpkg -i /tmp/libstdc++5.deb || apt-get -f install -y --no-install-recommends; \
-  rm -f /tmp/libstdc++5.deb; \
-  rm -rf /var/lib/apt/lists/*; \
-  # Verify the library is installed
-  ls -la /usr/lib/i386-linux-gnu/libstdc++.so.5* || ls -la /usr/lib32/libstdc++.so.5* || true
-
-# ----------------------------
-# Create a non-root user
-# ----------------------------
-RUN useradd -m -u 10001 -s /usr/sbin/nologin ut2004 \
-  && mkdir -p "${CONFIG_DIR}" \
-  && chown -R ut2004:ut2004 "${CONFIG_DIR}"
-
-# ----------------------------
-# Entrypoint
-# ----------------------------
-COPY entrypoint.sh /usr/local/bin/entrypoint.sh
-RUN chmod +x /usr/local/bin/entrypoint.sh
-
-VOLUME ["/config"]
+EXPOSE 7777/udp
+EXPOSE 7778/udp
 
-EXPOSE 7777/udp 7778/udp 7779/udp
+# COPY Modules/ "${BASE_MODULES}/"
+COPY Hooks/ "${BASE_HOOKS}/"
 
 WORKDIR /config
-ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
+ENTRYPOINT ["/usr/local/bin/entrypoint.ps1"]