Changed docker file

Dockerfile

@@ -1,13 +1,25 @@
-FROM python:3.12
+# Dockerfile
 
-WORKDIR /code
+# Use an official Python runtime as a parent image
+FROM python:3.12-slim
 
-COPY ./requirements.txt /code/requirements.txt
+# Set the working directory in the container
+WORKDIR /app
 
-RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+# Copy the requirements file into the container
+COPY requirements.txt .
 
+# Install any needed packages specified in requirements.txt
+RUN pip install --no-cache-dir --upgrade -r requirements.txt
+
+# Copy the rest of the application's code into the container
 COPY . .
 
+# Make port 7860 available to the world outside this container
 EXPOSE 7860
 
-CMD ["shiny", "run", "app.py", "--host", "0.0.0.0", "--port", "7860"]
+# Command to run the application using Gunicorn
+# This is a robust way to run FastAPI/Flask in production.
+# It starts 4 worker processes to handle requests.
+# The app:app part refers to the file 'app.py' and the FastAPI instance 'app'.
+CMD ["gunicorn", "--workers", "4", "--worker-class", "uvicorn.workers.UvicornWorker", "--bind", "0.0.0.0:7860", "app:app"]