Update Dockerfile

Dockerfile

@@ -14,12 +14,23 @@ RUN apt-get update && apt-get install -y \
 # Set working directory
 WORKDIR /app
 
+# Create a non-root user to run the application
+RUN useradd -m appuser
+RUN chown -R appuser:appuser /app
+
+# Create cache directories with proper permissions
+RUN mkdir -p /tmp/matplotlib /tmp/torchxrayvision
+RUN chown -R appuser:appuser /tmp/matplotlib /tmp/torchxrayvision
+
 # Copy project files
-COPY . .
+COPY --chown=appuser:appuser . .
 
 # Install Python dependencies
 RUN pip install --no-cache-dir -r requirements.txt
 
+# Switch to non-root user
+USER appuser
+
 # Expose the port used by FastAPI
 EXPOSE 7860