implement video download

needs check, if converted files can be run on device

Signed-off-by: Peter Siegmund <developer@mars3142.org>

server/cinema/Dockerfile

@@ -13,13 +13,26 @@ RUN dart run build_runner build --delete-conflicting-outputs && \
     dart compile exe bin/server.dart -o bin/server \
     -DAPP_VERSION=$APP_VERSION
 
-# Build minimal serving image from AOT-compiled `/server`
-# and the pre-built AOT-runtime in the `/runtime/` directory of the base image.
-FROM scratch
+# Build minimal serving image with ffmpeg and yt-dlp
+FROM debian:stable-slim
+
+# Install ffmpeg and download yt-dlp binary
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ffmpeg \
+    ca-certificates \
+    curl \
+    && curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o /usr/local/bin/yt-dlp \
+    && chmod a+rx /usr/local/bin/yt-dlp \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
 COPY --from=build /runtime/ /
 COPY --from=build /app/bin/server /app/bin/
 COPY assets /assets
 
 # Start server.
 EXPOSE 3000
-CMD ["/app/bin/server"]
+# Update yt-dlp on startup, run server, and schedule restart after 24h
+CMD yt-dlp -U 2>/dev/null || true; \
+    (sleep 86400 && kill 1) & \
+    /app/bin/server