docs: add Wine guide for running Windows apps inside Neko (closes #613)

webpage/docs/advanced-topics/wine.md

@@ -0,0 +1,208 @@
+---
+sidebar_label: "Running Wine"
+description: "Run Windows applications inside a Neko container using Wine."
+---
+
+# Running Wine inside Neko
+
+[Wine](https://www.winehq.org/) is a compatibility layer that allows running Windows applications on Linux. Because Neko runs a full Xorg display server, Wine applications can render their windows inside the Neko virtual desktop — giving you browser-accessible remote Windows app sessions.
+
+:::info
+This guide covers building a custom Docker image that extends a Neko base image with Wine. The result is a containerized Windows application accessible from any browser, just like any other Neko app.
+:::
+
+## How it works
+
+Neko provides a real Xorg display (not a virtual framebuffer), which is exactly what Wine needs to create windows. The `DISPLAY` and `PULSE_SERVER` environment variables are set automatically by the neko runtime, so Wine applications will use the correct display and audio output out of the box.
+
+The most common error when Wine fails to start is:
+
+```
+err:winediag:nodrv_CreateWindow Application tried to create a window, but no driver could be loaded.
+err:winediag:nodrv_CreateWindow The explorer process failed to start.
+```
+
+This happens when Wine cannot connect to an X11 display. Inside a Neko container this is handled automatically — ensure you are launching Wine **after** Xorg has started (i.e. from a supervisord program, not from a Docker `CMD`).
+
+## Building a custom image
+
+Extend any Neko base image (e.g. `xfce` for a full desktop or a browser image) with Wine:
+
+```dockerfile title="Dockerfile"
+FROM ghcr.io/m1k1o/neko/xfce:latest
+
+# Enable 32-bit architecture required by many Windows apps
+RUN dpkg --add-architecture i386
+
+# Add WineHQ repository for the latest stable release
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        software-properties-common \
+        gnupg2 \
+        wget \
+    && wget -qO /etc/apt/keyrings/winehq-archive.key \
+        https://dl.winehq.org/wine-builds/winehq.key \
+    && wget -NP /etc/apt/sources.list.d/ \
+        https://dl.winehq.org/wine-builds/debian/dists/bookworm/winehq-bookworm.sources \
+    && apt-get update \
+    && apt-get install -y --install-recommends winehq-stable \
+    && rm -rf /var/lib/apt/lists/*
+
+# Pre-initialize the Wine prefix as the neko user so it is ready at runtime
+USER neko
+RUN wine wineboot --init || true
+USER root
+```
+
+:::tip
+Most Windows applications require 32-bit libraries. Always run `dpkg --add-architecture i386` before installing Wine.
+:::
+
+## Running a specific application
+
+Create a supervisord configuration file so neko starts your application automatically:
+
+```ini title="app.conf"
+[program:myapp]
+environment=HOME="/home/%(ENV_USER)s",USER="%(ENV_USER)s",DISPLAY="%(ENV_DISPLAY)s"
+command=wine /home/neko/.wine/drive_c/Program Files/MyApp/MyApp.exe
+autorestart=true
+priority=800
+user=%(ENV_USER)s
+stdout_logfile=/var/log/neko/myapp.log
+stdout_logfile_maxbytes=100MB
+stdout_logfile_backups=10
+redirect_stderr=true
+```
+
+Mount it into the container at `/etc/neko/supervisord/app.conf`.
+
+## docker-compose example
+
+```yaml title="docker-compose.yaml"
+services:
+  neko:
+    build: .           # uses the Dockerfile above
+    restart: unless-stopped
+    shm_size: "2gb"
+    ports:
+      - "8080:8080"
+      - "52000-52100:52000-52100/udp"
+    volumes:
+      - "./app.conf:/etc/neko/supervisord/app.conf"
+      # persist the Wine prefix so installations survive restarts
+      - "./wine-prefix:/home/neko/.wine"
+    environment:
+      NEKO_DESKTOP_SCREEN: 1920x1080@30
+      NEKO_MEMBER_MULTIUSER_USER_PASSWORD: neko
+      NEKO_MEMBER_MULTIUSER_ADMIN_PASSWORD: admin
+      NEKO_WEBRTC_EPR: 52000-52100
+      NEKO_WEBRTC_ICELITE: 1
+```
+
+Fix permissions on the mounted wine prefix directory so the `neko` user (UID 1000) can write to it:
+
+```bash
+sudo chown -R 1000:1000 ./wine-prefix
+```
+
+## Audio support
+
+Neko uses PulseAudio. Wine's audio backend will automatically pick up the `PULSE_SERVER` environment variable that Neko sets, so sound should work without any additional configuration. If you experience audio issues, ensure the `pulseaudio` package is available in your image (it is included in all official Neko base images).
+
+## Using Winetricks
+
+[Winetricks](https://github.com/Winetricks/winetricks) can be used to install additional Windows runtime dependencies (e.g. DirectX, .NET, Visual C++ redistributables) inside the Wine prefix:
+
+```dockerfile title="Dockerfile (continued)"
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        winetricks \
+        cabextract \
+        unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install common runtimes (run as neko user so they land in the correct prefix)
+USER neko
+RUN winetricks -q vcrun2019 dotnet48
+USER root
+```
+
+## GPU acceleration with Wine
+
+If you need GPU acceleration (e.g. for DirectX games or 3D applications), use a Neko NVIDIA image as your base and add the `--privileged` flag or the appropriate device mappings:
+
+```dockerfile title="Dockerfile (NVIDIA)"
+FROM ghcr.io/m1k1o/neko/nvidia-xfce:latest
+
+RUN dpkg --add-architecture i386 \
+    && apt-get update \
+    && apt-get install -y --install-recommends winehq-stable \
+    && rm -rf /var/lib/apt/lists/*
+```
+
+```yaml title="docker-compose.yaml (NVIDIA)"
+services:
+  neko:
+    build: .
+    restart: unless-stopped
+    shm_size: "2gb"
+    ports:
+      - "8080:8080"
+      - "52000-52100:52000-52100/udp"
+    environment:
+      NEKO_DESKTOP_SCREEN: 1920x1080@30
+      NEKO_MEMBER_MULTIUSER_USER_PASSWORD: neko
+      NEKO_MEMBER_MULTIUSER_ADMIN_PASSWORD: admin
+      NEKO_WEBRTC_EPR: 52000-52100
+      NEKO_WEBRTC_ICELITE: 1
+      NVIDIA_VISIBLE_DEVICES: all
+      NVIDIA_DRIVER_CAPABILITIES: all
+    deploy:
+      resources:
+        reservations:
+          devices:
+            - driver: nvidia
+              count: 1
+              capabilities: [gpu]
+```
+
+## Troubleshooting
+
+### `nodrv_CreateWindow` — no driver could be loaded
+
+Wine requires an X11 display. Make sure your Wine application is started **from a supervisord program** (not from the Dockerfile `CMD` or `ENTRYPOINT`), so that Xorg is already running when Wine starts.
+
+### Application crashes immediately
+
+Run the container interactively and launch Wine manually to see the full error output:
+
+```bash
+docker exec -it neko bash
+su - neko -c "DISPLAY=:99 wine /path/to/app.exe"
+```
+
+Check the Wine debug output by setting `WINEDEBUG`:
+
+```bash
+DISPLAY=:99 WINEDEBUG=+all wine /path/to/app.exe 2>&1 | head -100
+```
+
+### Missing DLLs or runtimes
+
+Use `winetricks` to install required Windows runtimes. Common ones are:
+
+| Runtime | Winetricks verb |
+|---------|----------------|
+| Visual C++ 2019 | `vcrun2019` |
+| .NET Framework 4.8 | `dotnet48` |
+| DirectX | `d3dx9` / `d3dx11_43` |
+| Windows Media codecs | `wmp11` |
+
+### 32-bit vs 64-bit Wine prefix
+
+By default Wine creates a 64-bit prefix (`WINEARCH=win64`). Some older applications require a 32-bit prefix:
+
+```bash
+WINEARCH=win32 WINEPREFIX=/home/neko/.wine32 wine /path/to/app32.exe
+```
+
+Set `WINEARCH` and `WINEPREFIX` in the supervisord `environment=` line when needed.

webpage/sidebars.ts

@@ -92,6 +92,15 @@ const sidebars: SidebarsConfig = {
     //  label: 'Hardware Acceleration',
     //  items: [{ type: "autogenerated", dirName: "hardware-acceleration" }]
     //},
+    {
+      type: 'category',
+      label: 'Advanced Topics',
+      className: 'menu__list-item-flat',
+      collapsible: false,
+      items: [
+        'advanced-topics/wine',
+      ]
+    },
     {
       type: 'category',
       label: 'Help & Support',