remove old comments

dockerfile

@@ -54,13 +54,5 @@ RUN arch=$(uname -m) && \
 # install poetry via pipx
 RUN pipx install poetry
 
-# Download dependencies as a separate step to take advantage of Docker's caching.
-# Leverage a cache mount to /root/.cache/pip to speed up subsequent builds.
-# Leverage a bind mount to requirements.txt to avoid having to copy them into
-# into this layer.
-# RUN --mount=type=cache,target=/root/.cache/pip \
-#     --mount=type=bind,source=requirements.txt,target=requirements.txt \
-#     python -m pip install -r requirements.txt
-
 # Switch to the non-privileged user to run the application.
 USER appuser