startup errors fix #1

Dockerfile

@@ -12,7 +12,8 @@ RUN apt-get update && apt-get install -y \
     ca-certificates \
     curl \
     gnupg \
-    lsb-release && \
+    lsb-release \
+    ffmpeg && \
     install -m 0755 -d /etc/apt/keyrings && \
     curl -fsSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc && \
     chmod a+r /etc/apt/keyrings/docker.asc && \