Update Dockerfile

Dockerfile

@@ -1,14 +1,23 @@
-# syntax=docker/dockerfile:1
+# Use the official Python image from the Docker Hub
+# The slim version is lighter and more suitable for production use
 FROM python:3.9-slim
 
 # Set the working directory in the container
 WORKDIR /app
 
-# Copy the current directory contents into the container at /app
-COPY . /app
+# Copy the requirements file first to leverage Docker cache
+COPY requirements.txt .
 
 # Install any needed packages specified in requirements.txt
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Run app.py when the container launches
-CMD [ "python3", "-m" , "flask", "run", "--host=0.0.0.0"]
+# Copy the rest of the application code
+COPY . .
+
+# Set environment variables for Flask
+ENV FLASK_APP=app.py
+ENV FLASK_RUN_HOST=0.0.0.0
+ENV FLASK_ENV=production  # Set to "development" if you need to enable debug mode
+
+# Run the application
+CMD ["flask", "run"]