Initial commit: CTmine-client (ContainerMine Client)

Docker-WebApp, die einen echten Minecraft Java-Client (Prism Launcher)
in einem Container mit virtuellem Display betreibt und per noVNC im
Browser anzeigt. Gedacht, um Accounts AFK an Farmen zu stellen.

- Multi-Stage Dockerfile: Vite/Vue-Build + Ubuntu-Runtime (Xvfb, x11vnc,
  websockify, noVNC, openbox, nginx, Prism Launcher 11.0.3)
- Vue 3 + Vite + TypeScript Dashboard (noVNC-iframe, Start/Stop,
  Status-Anzeige, Schnellstart-Anleitung)
- Node-Status-API ohne externe Dependencies (/api/status, /api/mc/*)
- docker-compose.yml mit PUID/PGID, konfigurierbarer Auflösung, shm_size
- Persistente Accounts/Instanzen in /config (Volume)

docker-compose.yml

@@ -0,0 +1,37 @@
+# CTmine-client · ContainerMine Client
+# Start:  docker compose up -d --build
+# Web:    http://localhost:8080
+
+services:
+  ctmine-client:
+    image: ctmine-client:latest
+    container_name: ctmine-client
+    build:
+      context: .
+      dockerfile: Dockerfile
+    restart: unless-stopped
+
+    environment:
+      PUID: ${PUID:-1000}
+      PGID: ${PGID:-1000}
+      TZ: ${TZ:-Europe/Berlin}
+      DISPLAY_WIDTH: ${DISPLAY_WIDTH:-1280}
+      DISPLAY_HEIGHT: ${DISPLAY_HEIGHT:-720}
+      DISPLAY_REFRESH: ${DISPLAY_REFRESH:-60}
+      DISPLAY_DEPTH: ${DISPLAY_DEPTH:-24}
+      VNC_PASSWORD: ${VNC_PASSWORD:-}
+      NOVNC_PATH: ${NOVNC_PATH:-}
+
+    ports:
+      - "${WEB_PORT:-8080}:8080"
+
+    volumes:
+      # Persistente Daten: Microsoft-Account, Prism-Instanzen, .minecraft
+      - ./config:/config
+
+    # Software-Rendering braucht Shared Memory für OpenGL.
+    shm_size: "1gb"
+
+    #Optionale GPU-Beschleunigung (im Software-Rendering-Modus nicht nötig):
+    # devices:
+    #   - /dev/dri:/dev/dri