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+# 1. Use an Ubuntu base image
+FROM ubuntu:22.04
+
+# 2. Set environment variables to prevent interactive prompts during apt install
+ENV DEBIAN_FRONTEND=noninteractive
+
+# 3. Create a non-root user (Best Practice for Hugging Face Spaces)
+RUN useradd -m -u 1000 user
+USER user
+WORKDIR /home/user
+
+# Switch back to root temporarily to perform package installation
+USER root
+
+# 4. Install necessary tools and add the Antigravity repository
+# The commands are slightly modified to be run sequentially and cleanly in a Docker build.
+RUN apt update && \
+    apt install -y curl gnupg apt-transport-https ca-certificates && \
+    mkdir -p /etc/apt/keyrings && \
+    curl -fsSL https://us-central1-apt.pkg.dev/doc/repo-signing-key.gpg | \
+      gpg --dearmor --yes -o /etc/apt/keyrings/antigravity-repo-key.gpg && \
+    echo "deb [signed-by=/etc/apt/keyrings/antigravity-repo-key.gpg] https://us-central1-apt.pkg.dev/projects/antigravity-auto-updater-dev/ antigravity-debian main" | \
+      tee /etc/apt/sources.list.d/antigravity.list > /dev/null
+
+# 5. Update package cache and install the 'antigravity' package
+RUN apt update && \
+    apt install -y antigravity
+
+# 6. Switch back to the non-root user
+USER user
+
+# 7. Copy the application files
+COPY app.py /home/user/app.py
+COPY run_app.sh /home/user/run_app.sh
+RUN chmod +x /home/user/run_app.sh
+
+# 8. Install Python3 (required for the web app)
+RUN apt install -y python3
+
+# 9. Switch back to the non-root user
+USER user
+
+# 10. Define the command to run when the container starts
+# This runs the Python web application that demonstrates the antigravity package
+CMD ["python3", "/home/user/app.py"]