add: add Docker support for Dedicated Server

add with entrypoint and build scripts

.gitignore

@@ -442,3 +442,4 @@ Minecraft.Client/Saves/
 
 tmp*/
 _server_asset_probe/
+server-data/

README.md

@@ -58,6 +58,51 @@ Minecraft.Client.exe -server -ip 0.0.0.0 -port 25565
 
 The headless server also reads and writes `server.properties` in the working directory. If `-ip` / `-port` are omitted in `-server` mode, it falls back to `server-ip` / `server-port` from that file. Dedicated-server host options such as `trust-players`, `pvp`, `fire-spreads`, `tnt`, `difficulty`, `gamemode`, `spawn-animals`, and `spawn-npcs` are persisted there as well.
 
+## Dedicated Server in Docker (Wine)
+
+This repository includes a lightweight Docker setup for running the Windows dedicated server under Wine.
+**To build the image, a release build of `Minecraft.Server` is required.**
+
+1. Build the dedicated server (`Minecraft.Server`) first.
+2. Start with Docker Compose (server runtime files are copied into the image at build time):
+
+```bash
+docker compose -f docker-compose.dedicated-server.yml up -d
+```
+
+or use the helper script:
+
+```bash
+./start-dedicated-server.sh
+```
+
+You can explicitly choose runtime:
+**However, debug builds often fail to run because some debug-related libraries are missing.**
+
+```bash
+./start-dedicated-server.sh release
+./start-dedicated-server.sh debug
+```
+
+By default, build input is `x64/Minecraft.Server/Release`. Override it when needed (path must be inside this repository):
+
+```bash
+MC_RUNTIME_DIR=x64/Minecraft.Server/Debug docker compose -f docker-compose.dedicated-server.yml up -d --build
+```
+
+Useful environment variables:
+- `XVFB_DISPLAY` (default: `:99`)
+- `XVFB_SCREEN` (default: `64x64x16`, tiny virtual display used by Wine)
+
+Fixed server runtime behavior in container:
+- executable path: `/srv/mc/Minecraft.Server.exe`
+- bind IP: `0.0.0.0`
+- server port: `25565`
+
+Persistent files are bind-mounted to host:
+- `./server-data/server.properties` -> `/srv/mc/server.properties`
+- `./server-data/GameHDD` -> `/srv/mc/Windows64/GameHDD`
+
 ## Controls (Keyboard & Mouse)
 
 - **Movement**: `W` `A` `S` `D`

docker-build-dedicated-server.sh

@@ -0,0 +1 @@
+docker compose -f docker-compose.dedicated-server.yml build

docker-compose.dedicated-server.yml

@@ -0,0 +1,27 @@
+services:
+  minecraft-lce-dedicated-server:
+    build:
+      context: .
+      dockerfile: docker/dedicated-server/Dockerfile
+      args:
+        MC_RUNTIME_DIR: ${MC_RUNTIME_DIR:-x64/Minecraft.Server/Release}
+    container_name: minecraft-lce-dedicated-server
+    restart: unless-stopped
+    environment:
+      TZ: ${TZ:-Asia/Tokyo}
+      WINEARCH: win64
+      WINEPREFIX: /var/opt/wineprefix64
+      WINEDEBUG: -all
+      # minimum required virtual screen
+      XVFB_DISPLAY: ${XVFB_DISPLAY:-:99}
+      XVFB_SCREEN: ${XVFB_SCREEN:-64x64x16}
+    volumes:
+      # - wineprefix64:/var/opt/wineprefix64
+      - ./server-data:/srv/persist
+    ports:
+      - "25565:25565/tcp"
+      - "25565:25565/udp"
+    stop_grace_period: 30s
+
+# volumes:
+#   wineprefix64:

docker/dedicated-server/Dockerfile

@@ -0,0 +1,33 @@
+FROM debian:bookworm-slim
+
+ARG DEBIAN_FRONTEND=noninteractive
+# basically, it only works with a Release build.(libs are not included in Debug build)
+ARG MC_RUNTIME_DIR=x64/Minecraft.Server/Release
+
+RUN dpkg --add-architecture i386 \
+    && apt-get update \
+    && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    wine \
+    wine64 \
+    wine32:i386 \
+    xvfb \
+    tini \
+    && rm -rf /var/lib/apt/lists/*
+
+ENV WINEARCH=win64
+ENV WINEPREFIX=/var/opt/wineprefix64
+
+WORKDIR /srv/mc
+
+COPY ${MC_RUNTIME_DIR}/Minecraft.Server.exe /srv/mc/Minecraft.Server.exe
+COPY ${MC_RUNTIME_DIR}/iggy_w64.dll /srv/mc/iggy_w64.dll
+COPY ${MC_RUNTIME_DIR}/Common /srv/mc/Common
+COPY ${MC_RUNTIME_DIR}/Windows64 /srv/mc/Windows64
+COPY docker/dedicated-server/entrypoint.sh /usr/local/bin/entrypoint.sh
+
+RUN chmod 0755 /usr/local/bin/entrypoint.sh \
+    && mkdir -p /var/opt/wineprefix64 /srv/mc \
+    && test -f /srv/mc/Minecraft.Server.exe
+
+ENTRYPOINT ["/usr/bin/tini", "--", "/usr/local/bin/entrypoint.sh"]

docker/dedicated-server/entrypoint.sh

@@ -0,0 +1,74 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SERVER_DIR="/srv/mc"
+SERVER_EXE="Minecraft.Server.exe"
+# ip & port are fixed since they run inside the container
+SERVER_PORT="25565"
+SERVER_BIND_IP="0.0.0.0"
+
+PERSIST_DIR="/srv/persist"
+WINE_CMD=""
+
+if [ ! -d "$SERVER_DIR" ]; then
+  echo "[error] Server directory not found: $SERVER_DIR" >&2
+  exit 1
+fi
+
+cd "$SERVER_DIR"
+
+if [ ! -f "$SERVER_EXE" ]; then
+  echo "[error] ${SERVER_EXE} not found in ${SERVER_DIR}" >&2
+  echo "[hint] Rebuild image with a valid MC_RUNTIME_DIR build arg that contains dedicated server runtime files." >&2
+  exit 1
+fi
+
+# created because it is not implemented on the server side
+mkdir -p "${PERSIST_DIR}/GameHDD"
+
+if [ ! -f "${PERSIST_DIR}/server.properties" ]; then
+  if [ -f "server.properties" ] && [ ! -L "server.properties" ]; then
+    cp -f "server.properties" "${PERSIST_DIR}/server.properties"
+  else
+    : > "${PERSIST_DIR}/server.properties" # the server writes the default configuration if the file is empty, so it works
+  fi
+fi
+
+# differs from the structure, but it’s reorganized into a more manageable structure to the host side
+if [ -e "Windows64/GameHDD" ] && [ ! -L "Windows64/GameHDD" ]; then
+  rm -rf "Windows64/GameHDD"
+fi
+ln -sfn "${PERSIST_DIR}/GameHDD" "Windows64/GameHDD"
+ln -sfn "${PERSIST_DIR}/server.properties" "server.properties"
+
+# for compatibility with other images
+if command -v wine64 >/dev/null 2>&1; then
+  WINE_CMD="wine64"
+elif [ -x "/usr/lib/wine/wine64" ]; then
+  WINE_CMD="/usr/lib/wine/wine64"
+elif command -v wine >/dev/null 2>&1; then
+  WINE_CMD="wine"
+else
+  echo "[error] No Wine executable found (wine64/wine)." >&2
+  exit 1
+fi
+
+if [ ! -d "${WINEPREFIX}" ] || [ -z "$(ls -A "${WINEPREFIX}" 2>/dev/null)" ]; then
+  mkdir -p "${WINEPREFIX}"
+fi
+
+# in the current implementation, a virtual screen is required because the client-side logic is being called for compatibility
+if [ -z "${DISPLAY:-}" ]; then
+  export DISPLAY="${XVFB_DISPLAY:-:99}"
+  XVFB_SCREEN="${XVFB_SCREEN:-64x64x16}"
+  Xvfb "${DISPLAY}" -nolisten tcp -screen 0 "${XVFB_SCREEN}" >/tmp/xvfb.log 2>&1 &
+  sleep 0.2
+fi
+
+args=(
+  -port "${SERVER_PORT}"
+  -bind "${SERVER_BIND_IP}"
+)
+
+echo "[info] Starting ${SERVER_EXE} on ${SERVER_BIND_IP}:${SERVER_PORT}"
+exec "${WINE_CMD}" "${SERVER_EXE}" "${args[@]}"

start-dedicated-server.sh

@@ -0,0 +1,90 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+COMPOSE_FILE="${SCRIPT_DIR}/docker-compose.dedicated-server.yml"
+SERVICE_NAME="minecraft-lce-dedicated-server"
+PERSIST_DIR="${SCRIPT_DIR}/mc-server-data"
+
+if [[ ! -f "${COMPOSE_FILE}" ]]; then
+  echo "[error] docker-compose file not found: ${COMPOSE_FILE}" >&2
+  exit 1
+fi
+
+if command -v docker >/dev/null 2>&1; then
+  COMPOSE_CMD=(docker compose)
+elif command -v docker-compose >/dev/null 2>&1; then
+  COMPOSE_CMD=(docker-compose)
+else
+  echo "[error] docker compose is not available." >&2
+  exit 1
+fi
+
+# can choose between release and debug, but honestly there isn’t much use
+if [[ "${#}" -gt 1 ]]; then
+  echo "Usage: $0 [release|debug|<runtime-dir-in-repo>]" >&2
+  exit 1
+fi
+
+mkdir -p "${PERSIST_DIR}/GameHDD"
+if [[ ! -f "${PERSIST_DIR}/server.properties" ]]; then
+  : > "${PERSIST_DIR}/server.properties"
+fi
+
+if [[ "${#}" -eq 1 ]]; then
+  case "${1}" in
+    release)
+      MC_RUNTIME_DIR_INPUT="x64/Minecraft.Server/Release"
+      ;;
+    debug)
+      MC_RUNTIME_DIR_INPUT="x64/Minecraft.Server/Debug"
+      ;;
+    *)
+      MC_RUNTIME_DIR_INPUT="${1}"
+      ;;
+  esac
+else
+  if [[ -f "${SCRIPT_DIR}/x64/Minecraft.Server/Release/Minecraft.Server.exe" ]]; then
+    MC_RUNTIME_DIR_INPUT="x64/Minecraft.Server/Release"
+  else
+    MC_RUNTIME_DIR_INPUT="x64/Minecraft.Server/Debug"
+  fi
+fi
+
+if [[ "${MC_RUNTIME_DIR_INPUT}" = /* ]]; then
+  if [[ "${MC_RUNTIME_DIR_INPUT}" != "${SCRIPT_DIR}"/* ]]; then
+    echo "[error] runtime-dir must be inside repository: ${MC_RUNTIME_DIR_INPUT}" >&2
+    exit 1
+  fi
+  MC_RUNTIME_DIR_REL="${MC_RUNTIME_DIR_INPUT#${SCRIPT_DIR}/}"
+else
+  MC_RUNTIME_DIR_REL="${MC_RUNTIME_DIR_INPUT#./}"
+fi
+
+if [[ -z "${MC_RUNTIME_DIR_REL}" || "${MC_RUNTIME_DIR_REL}" = "." ]]; then
+  echo "[error] runtime-dir is invalid: ${MC_RUNTIME_DIR_INPUT}" >&2
+  exit 1
+fi
+
+if ! RUNTIME_ABS="$(cd "${SCRIPT_DIR}" && cd "${MC_RUNTIME_DIR_REL}" 2>/dev/null && pwd)"; then
+  echo "[error] runtime-dir not found: ${MC_RUNTIME_DIR_INPUT}" >&2
+  exit 1
+fi
+
+if [[ "${RUNTIME_ABS}" != "${SCRIPT_DIR}"/* ]]; then
+  echo "[error] runtime-dir must resolve inside repository: ${MC_RUNTIME_DIR_INPUT}" >&2
+  exit 1
+fi
+
+MC_RUNTIME_DIR_REL="${RUNTIME_ABS#${SCRIPT_DIR}/}"
+
+if [[ ! -f "${RUNTIME_ABS}/Minecraft.Server.exe" ]]; then
+  echo "[error] Minecraft.Server.exe not found in: ${RUNTIME_ABS}" >&2
+  echo "[hint] Build dedicated server first, then retry." >&2
+  exit 1
+fi
+
+echo "[info] Using runtime (build arg): ${MC_RUNTIME_DIR_REL}"
+echo "[info] Persistent data dir: ${PERSIST_DIR}"
+MC_RUNTIME_DIR="${MC_RUNTIME_DIR_REL}" "${COMPOSE_CMD[@]}" -f "${COMPOSE_FILE}" up -d --build "${SERVICE_NAME}"
+echo "[info] Dedicated server started."