update docker file

Dockerfile

@@ -1,20 +1,27 @@
+# Use the official Python 3.9 image
 FROM python:3.10
 
+# 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
-
+# Set home to the user's home directory
 ENV HOME=/home/user \
 	PATH=/home/user/.local/bin:$PATH
 
+# Set the working directory to the user's home directory
 WORKDIR $HOME/app
 
+# Copy the current directory contents into the container at $HOME/app setting the owner to the user
 COPY --chown=user . $HOME/app
 
-CMD ["flask" "run" "-p" "7890" "-h" "0.0.0.0"]
+CMD ["python3" "-m" "flask" "run" "-p" "7890" "-h" "0.0.0.0"]