Add git to Dockerfile for proxy-lite installation

Dockerfile

@@ -41,6 +41,7 @@ RUN apt-get update && apt-get install -y \
     xvfb \
     # Ensure Chromium is installed on the system (Playwright uses its own, but sometimes useful)
     chromium \
+    git \
     # Clean up apt caches to reduce image size
     && rm -rf /var/lib/apt/lists/*