feat: expand desktop computer-use APIs

docker/runtime/Dockerfile

@@ -152,7 +152,8 @@ FROM debian:bookworm-slim
 RUN apt-get update && apt-get install -y \
     ca-certificates \
     curl \
-    git && \
+    git \
+    ffmpeg && \
     rm -rf /var/lib/apt/lists/*
 
 # Copy the binary from builder

docker/test-agent/Dockerfile

@@ -25,6 +25,7 @@ RUN apt-get update -qq && \
       openbox \
       xdotool \
       imagemagick \
+      ffmpeg \
       x11-xserver-utils \
       dbus-x11 \
       xauth \