Add optional WebTransport frame transport

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:22-bookworm-slim
+FROM node:22-trixie-slim
 
 ENV NODE_ENV=production
 ENV PORT=3000
@@ -10,7 +10,7 @@ WORKDIR /app
 ADD https://api.github.com/repos/yt-dlp/yt-dlp/commits/master /tmp/yt-dlp-master.json
 
 RUN apt-get update \
-  && apt-get install -y --no-install-recommends ca-certificates ffmpeg python3 python3-pip \
+  && apt-get install -y --no-install-recommends ca-certificates ffmpeg openssl python3 python3-pip \
   && python3 -m pip install --no-cache-dir --break-system-packages --upgrade "$YT_DLP_PIP_SPEC" \
   && yt-dlp --version \
   && apt-get purge -y --auto-remove python3-pip \
@@ -30,6 +30,7 @@ RUN mkdir -p /app/data \
 USER node
 
 EXPOSE 3000
+EXPOSE 3001/udp
 
 HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
   CMD node -e "fetch('http://127.0.0.1:' + (process.env.PORT || 3000) + '/api/health').then(r => process.exit(r.ok ? 0 : 1)).catch(() => process.exit(1))"