The first deploy of the new interface reported success and served the
previous build: docker compose does not re-pull a tag it already has
locally, so a deployment sitting on "latest" keeps running whatever it
pulled the first time. Nothing in the output says so - the CSS was simply
the old one.
Pinning IMAGE_TAG to the sha- tag is what forces the pull, and it is what
makes a rollback possible at all. The deployment guide now says so, with
the reason.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
