Auto web interface: start VS Code serve-web automatically

Dockerfile

@@ -1,11 +1,11 @@
-# Clean Dockerfile for Antigravity Sandbox
+# Antigravity Docker Sandbox with Auto Web Interface
 FROM ubuntu:22.04
 
 ENV DEBIAN_FRONTEND=noninteractive
 
 # Install basic packages
 RUN apt update && \
-    apt install -y curl gnupg apt-transport-https ca-certificates python3 python3-pip
+    apt install -y curl gnupg apt-transport-https ca-certificates
 
 # Add Antigravity repository
 RUN mkdir -p /etc/apt/keyrings && \
@@ -23,11 +23,10 @@ RUN useradd -m -u 1000 user
 USER user
 WORKDIR /home/user
 
-# Copy application
-COPY app.py /home/user/app.py
-
-# Set environment variables
+# Set environment variables for VS Code web server
 ENV PORT=7860
+ENV HOME=/home/user
+ENV DISPLAY=:0
 
-# Start application
-CMD ["python3", "/home/user/app.py"]
+# Start VS Code web server automatically
+CMD ["antigravity", "--serve-web", "--port=7860"]