#2233 Automate ./dtox.sh image builds. Issue created by jsirois Most of the infra is in place: • The

./dtox.sh

script builds the base image only if needed, it just doesn't push the image. • The cache image used by CI was built and pushed by hand via

tox -e build-cache-image -- --push

. The base image should be built in-line with CI (if needed), but the cache image need not be and is more expensive to build. That can probably be cronned at a period of ~1 week to start. pantsbuild/pex