Update Dockerfile

Dockerfile

@@ -1,25 +1,16 @@
-# Use a minimal base image with Python 3.9 installed
 FROM python:3.9-slim
 
-# Set the working directory inside the container to /app
 WORKDIR /app
 
-# Copy the requirements file first to leverage Docker's layer caching
-# This layer only rebuilds if requirements.txt is modified
-COPY requirements.txt /app/requirements.txt
-
-# Install Python dependencies
+COPY requirements.txt .
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Copy the rest of the backend files
-# This layer rebuilds on app.py changes, but the pip install step remains cached
-COPY app.py /app/
-COPY boston_housing_model.pkl /app/
-COPY preprocessor.pkl /app/
-
-# Expose port 5000 for the Flask application
-EXPOSE 5000
+COPY app.py .
+COPY boston_housing_model.pkl .
+COPY preprocessor.pkl .
 
-# Define the command to run the Flask application using Gunicorn
-CMD ["gunicorn", "--bind", "0.0.0.0:5000", "app:app"]
+# Expose the port Hugging Face provides
+EXPOSE ${PORT}
 
+# Use the PORT environment variable
+CMD exec gunicorn --bind 0.0.0.0:${PORT} app:app