Add FFmpeg dev headers for decord build

Dockerfile.gpu

@@ -13,6 +13,13 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     cmake \
     build-essential \
     pkg-config \
+    libavcodec-dev \
+    libavformat-dev \
+    libavutil-dev \
+    libavdevice-dev \
+    libavfilter-dev \
+    libswresample-dev \
+    libswscale-dev \
     && rm -rf /var/lib/apt/lists/* \
     && ln -sf /usr/bin/python3.11 /usr/bin/python3 \
     && ln -sf /usr/bin/python3 /usr/bin/python