Add managed LadyPoly WebUI using Deck music API

deploy/ladypoly/Dockerfile

@@ -0,0 +1,14 @@
+FROM python:3.12-slim
+ARG UPSTREAM_COMMIT=3960afc309efcef5f4f570209cf01160b96b1ea3
+RUN apt-get update && apt-get install -y --no-install-recommends git libsndfile1 && rm -rf /var/lib/apt/lists/* \
+ && git init /app && cd /app && git remote add origin https://github.com/Ladypoly/YuE2_WebUI.git \
+ && git fetch --depth 1 origin ${UPSTREAM_COMMIT} && git checkout --detach FETCH_HEAD \
+ && rm -rf /app/.git \
+ && pip install --no-cache-dir fastapi==0.115.12 uvicorn==0.34.2 python-multipart==0.0.20 numpy==2.2.6 soundfile==0.13.1
+COPY bridge.py /app/webui/deck_bridge.py
+RUN python -c "from pathlib import Path; p=Path('/app/webui/server.py'); s=p.read_text(); s=s.replace('SETTINGS_FILE = Path(__file__).resolve().parent / \"settings.json\"','SETTINGS_FILE = Path(\"/data/settings.json\")'); s=s.replace('from loras import Loras', 'from deck_bridge import Loras'); s=s.replace('if __name__ == \"__main__\":','from deck_bridge import install\ninstall(globals())\n\nif __name__ == \"__main__\":'); p.write_text(s)"
+RUN python -c "from pathlib import Path; p=Path('/app/webui/static/index.html'); s=p.read_text().replace('<body>', '<body><div style=\"padding:12px;background:#193249;color:white\">LadyPoly mit Athena Deck · <a style=\"color:#8de8ff\" href=\"/deck-connection\">Deck-Verbindung einrichten</a> · In Deck Musik aktivieren. Worker-Abbruch in Deck.</div>'); s=s.replace('value=\"full\" checked', 'value=\"full\" disabled').replace('value=\"melody\"', 'value=\"melody\" disabled').replace('value=\"off\"', 'value=\"off\" checked'); s=s.replace('</head>', '<style>#engineToggle,#muse,#coverDrawer,#scoreDrawer,#advDrawer,#cancelRun{display:none!important}</style></head>'); p.write_text(s)"
+ENV PYTHONPATH=/app/src YUE2_HOST=127.0.0.1 YUE2_PORT=8127 YUE2_OUTPUTS=/data/outputs HOME=/data
+WORKDIR /app
+USER 65534:65534
+CMD ["python", "webui/server.py"]