Avoid cache directory with pip install --no-cache-dir <package> DOK-P1003
Performance
Minor
Once a package is installed, it does not need to be re-installed and the Docker cache can be leveraged instead. Since the pip cache makes the images larger and is not needed, it's better to disable it.
Bad Practice
RUN pip3 install foobar
Recommended
RUN pip3 install --no-cache-dir foobar