Update Dockerfile

Dockerfile

@@ -17,5 +17,5 @@ COPY . .
 # Expose the port the app runs on
 EXPOSE 5000
 
-# Define the command to run the application
-CMD ["python", "ConstructionComplexityCalculator.py"]
+# Define the command to run the application using gunicorn
+CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:5000", "ConstructionComplexityCalculator:app"]