fix: only one media folder

backend/playout/Dockerfile

@@ -22,12 +22,11 @@ WORKDIR /app
 COPY --from=builder /playlist-manager /app/playlist-manager
 COPY start-playout.sh /app/
 
-# Create directories for playlist, media, and HLS output
-RUN mkdir -p /app/playlist /app/media /app/hls
+# Copy demo data for out-of-the-box playout
+COPY demodata/ /app/
 
-# Copy demo media and playlist for out-of-the-box playout
-COPY demodata/media/ /app/media/
-COPY demodata/playlist/ /app/playlist/
+# Create directories for playlist, media, and HLS output
+RUN mkdir -p /app/hls
 
 RUN chmod +x /app/start-playout.sh /app/playlist-manager