Currently the Dockerfile downloads and installs the python packages every time during the image build process. These packages can be cached to save some time (15-ish seconds) when rebuilding the image. This is mostly useful during development and can (depending on the config) speed up deployments.

This can be accomplished by installing the python dependencies first before copying the rest of the project. Such as this:

FROM python:latest
WORKDIR /usr/src/app

COPY requirements.txt Makefile ./
RUN make install-python-requirements

COPY . .
RUN make generate-site

EXPOSE 8000
ENTRYPOINT ["make", "serve"]

More information on this concept can be found through these resources:

• Using the build cache | Docker Docs
• Cache | Docker Docs
• Build cache invalidation | Docker Docs