build: simplified the dockerfile to install ffmpeg via apt

Dockerfile

@@ -1,7 +1,6 @@
 # NodeCast TV Docker Image
 #
-# Multi-stage build for FFmpeg with full hardware acceleration support.
-# Uses linuxserver/ffmpeg which includes NVENC, VAAPI, and QSV.
+# Uses system FFmpeg with hardware acceleration drivers installed.
 #
 # Hardware acceleration:
 #   - VAAPI (Intel/AMD): Mount /dev/dri and add video/render groups
@@ -12,15 +11,13 @@
 # Run with VAAPI: docker run --device /dev/dri:/dev/dri --group-add video ...
 # Run with NVENC: docker run --gpus all ...
 
-# Stage 1: Get FFmpeg with all hardware encoders from linuxserver
-FROM linuxserver/ffmpeg:latest AS ffmpeg
-
-# Stage 2: Node.js runtime with app
 FROM node:20-slim
 
-# Install runtime dependencies for FFmpeg and hardware acceleration
+# Install FFmpeg, build dependencies, and hardware acceleration drivers
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get update && apt-get install -y --no-install-recommends \
+    # FFmpeg with full codec support
+    ffmpeg \
     # Build dependencies for better-sqlite3
     python3 \
     make \
@@ -35,28 +32,10 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     i965-va-driver \
     # VA-API utilities for debugging
     vainfo \
-    # FFmpeg shared library dependencies
-    libx264-164 \
-    libx265-199 \
-    libfdk-aac2 \
-    libvpx7 \
-    libmp3lame0 \
-    libopus0 \
-    libvorbis0a \
-    libass9 \
-    libfreetype6 \
-    libfontconfig1 \
-    libssl3 \
-    # NVIDIA libraries (for NVENC when using --gpus)
-    libnvidia-encode1 \
-    && rm -rf /var/lib/apt/lists/* || true
+    && rm -rf /var/lib/apt/lists/*
 
-# Copy FFmpeg binaries from linuxserver/ffmpeg
-COPY --from=ffmpeg /usr/local/bin/ffmpeg /usr/local/bin/ffmpeg
-COPY --from=ffmpeg /usr/local/bin/ffprobe /usr/local/bin/ffprobe
-
-# Verify FFmpeg works and show hardware encoders
-RUN ffmpeg -version && ffmpeg -encoders 2>/dev/null | grep -E "vaapi|nvenc|qsv" || echo "Note: HW encoders depend on runtime GPU access"
+# Verify FFmpeg installed and show version
+RUN ffmpeg -version && ffmpeg -encoders 2>/dev/null | grep -E "vaapi|nvenc|qsv|libx264" | head -10
 
 WORKDIR /app