Update Dockerfile

Dockerfile

@@ -1,27 +1,31 @@
 # Use a slim Python base image for efficiency
-FROM python:3.10
+FROM python:3.10-slim-buster
 
 # Set the working directory inside the container
 WORKDIR /app
 
 # Copy the requirements.txt file first to leverage Docker's build cache.
-# If requirements.txt doesn't change, this step won't re-run.
 COPY requirements.txt .
 
-# Install Python dependencies
-# --no-cache-dir: Reduces image size by not storing build cache
-# -r requirements.txt: Installs all packages listed in requirements.txt
+# Install Python dependencies (ensure gunicorn is listed in requirements.txt)
 RUN pip install --no-cache-dir -r requirements.txt
 
 # Install Nginx
 RUN apt-get update && apt-get install -y nginx && \
     rm -rf /var/lib/apt/lists/*
 
+# Create a dedicated directory for Nginx's temporary files and set permissions.
+# Nginx typically runs as the 'www-data' user, which needs write access here.
+RUN mkdir -p /tmp/nginx_cache/client_body && \
+    chown -R www-data:www-data /tmp/nginx_cache && \
+    chmod -R 755 /tmp/nginx_cache
+
 # Copy the entire project directory into the container's /app directory.
 # This includes main.py, streamlit_app.py, routers/, utils/, data/, etc.
 COPY . .
 
-# Replace the default Nginx configuration with your custom one
+# Replace the default Nginx configuration with your custom one.
+# IMPORTANT: Your nginx.conf MUST be updated as shown in Step 2 to use the new temp path.
 COPY nginx.conf /etc/nginx/nginx.conf
 
 # Grant execution permissions to the start.sh script
@@ -31,5 +35,4 @@ RUN chmod +x start.sh
 EXPOSE 7860
 
 # Define the command to run when the container starts.
-# This executes your start.sh script which then launches Flask, Streamlit, and Nginx.
 CMD ["./start.sh"]