Update Dockerfile

Dockerfile

@@ -1,19 +1,27 @@
 # Base image: CPU-only Python 3.12
 FROM python:3.12-slim
 
-# Set working directory
-WORKDIR /app
+# Create a non-root user (UID 1000 is required by Hugging Face)
+RUN useradd -m -u 1000 user
+USER user
+ENV HOME=/home/user \
+    PATH=/home/user/.local/bin:$PATH \
+    HF_HOME=/home/user/huggingface
 
-# Copy project files
-COPY requirements.txt .
-COPY app.py .
+# Set working directory to the user's home
+WORKDIR $HOME/app
 
-# Install dependencies
-RUN pip install --upgrade pip
-RUN pip install --no-cache-dir -r requirements.txt
+# Copy and install dependencies first (for better caching)
+COPY --chown=user requirements.txt .
+RUN pip install --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
 
-# Expose port
-EXPOSE 8000
+# Copy application code
+COPY --chown=user app.py .
 
-# Start Flask app
-CMD ["gunicorn", "--bind", "0.0.0.0:8000", "app:app"]
+# Hugging Face Spaces MUST use port 7860
+EXPOSE 7860
+
+# Use Gunicorn with 1 worker and multiple threads for CPU LLM inference
+# Note: 1 worker prevents loading the 1GB+ model into memory multiple times
+CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "1", "--threads", "4", "--timeout", "120", "app:app"]