re-ordered docker commands to match tutorial

Dockerfile

@@ -6,22 +6,15 @@ COPY ./requirements.txt /code/requirements.txt
 
 RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
-COPY . .
-
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]
-
-# 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 ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]