Continuous-Integration-Config has a Jenkins job operations-mw-config-typos-docker which runs against operations/mediawiki-config. It invokes the container docker-registry.wikimedia.org/releng/typos which does:
# <clone the repo, checkout the patch> /usr/bin/git grep -E -I -f typos -- . ':(exclude)typos'
The image is based on Debian Stretch which should be phased out (T278203).
If I remember properly, the image was also used for operations/puppet but the logic has since been moved to the source code which lets developers easily run it. We should do the same for operations/mediawiki-config, remove the Jenkins job and phase out the outdated Docker image.