Update Dockerfile

Dockerfile

@@ -1,11 +1,16 @@
-FROM python:3.8
+# Use the official Python 3.9 image
+FROM python:3.9
 
+# Set the working directory to /code
 WORKDIR /code
 
+# Copy the current directory contents into the container at /code
 COPY ./requirements.txt /code/requirements.txt
 
+# Install requirements.txt 
 RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
+# Set up a new user named "user" with user ID 1000
 RUN useradd -m -u 1000 user
 # Switch to the "user" user
 USER user