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@@ -1,8 +1,6 @@
-# Use a slim Python image
 FROM python:3.10-slim
 
-# Install system dependencies for Biopython and 3D rendering
-# FIX: Replaced 'libgl1-mesa-glx' with 'libgl1'
+# 1. System dependencies (Rarely change - cached first)
 RUN apt-get update && apt-get install -y \
     build-essential \
     libgl1 \
@@ -10,23 +8,23 @@ RUN apt-get update && apt-get install -y \
     git \
     && rm -rf /var/lib/apt/lists/*
 
-# Set up a new user 'user' with UID 1000 for Hugging Face security
+# 2. Setup user
 RUN useradd -m -u 1000 user
 USER user
 ENV HOME=/home/user \
     PATH=/home/user/.local/bin:$PATH
-
 WORKDIR $HOME/app
 
-# Install Python dependencies
+# 3. Python Requirements (Only re-installs if requirements.txt changes)
 COPY --chown=user requirements.txt $HOME/app/requirements.txt
 RUN pip install --no-cache-dir --upgrade -r requirements.txt
 
-# Copy the rest of the app
+# 4. App Code (Changes constantly - cached last)
+# This ensures a 1-line change in app.py doesn't re-trigger pip install!
 COPY --chown=user . $HOME/app
 
-# Expose the default Gradio port
+# 5. Launch
+# GRADIO_SERVER_NAME ensures it binds to the HF internal network
+ENV GRADIO_SERVER_NAME="0.0.0.0"
 EXPOSE 7860
-
-# Launch the app and bind to 0.0.0.0 so the HF proxy can find it
 CMD ["python", "app.py"]