Update Dockerfile

Dockerfile

@@ -12,11 +12,7 @@ RUN npm run build
 FROM node:18-alpine AS server
 WORKDIR /app/server
 
-# Install Python, pip and ffmpeg, then try to install yt-dlp from apk repos.
-# Fallback order:
-#  1) apk install yt-dlp
-#  2) apk install yt-dlp-core
-#  3) pip install yt-dlp
+# Install Python, pip, ffmpeg, and try yt-dlp from apk or fallback to pip
 RUN apk add --no-cache python3 py3-pip ffmpeg \
  && (apk add --no-cache yt-dlp || apk add --no-cache yt-dlp-core || python3 -m pip install --no-cache-dir -U yt-dlp) \
  && yt-dlp --version
@@ -33,11 +29,10 @@ COPY --from=client /app/client/dist ../client/dist
 # Environment
 ENV NODE_ENV=production
 ENV PORT=3000
-# Optional: path to cookies file in Netscape format for yt-dlp
-# e.g. YT_COOKIES=/data/cookies.txt
-# ENV YT_COOKIES=""
+# Optional: YT_COOKIES can be passed at runtime
+# ENV YT_COOKIES="/data/cookies.txt"
 
-# Show yt-dlp version at container start for debugging
-CMD echo "yt-dlp version:" && yt-dlp --version && npm start
+# At container start, always update yt-dlp to latest release and show version
+CMD yt-dlp -U && echo "yt-dlp version:" && yt-dlp --version && npm start
 
 EXPOSE 3000