- Switch db image from postgres:16 to pgvector/pgvector:pg17. The
bundled discourse-ai plugin's migration 20230710171141 runs
'CREATE EXTENSION IF NOT EXISTS vector' on every boot; without
the extension binaries installed in the postgres image, the
migration transaction is aborted and the app crash-loops. The
pgvector image is debian-based (bookworm) with the postgres
apt repo + pgdg.list already configured, so the recipe's
homegrown pg_upgrade entrypoint continues to work across major
version bumps.
- Bump PG_BACKUP_VERSION v1 → v2: the prior 'improved comments'
commit edited pg_backup.sh content without bumping the config
version, so any operator redeploying without a fresh stack
would hit 'only updates to Labels are allowed' from docker
swarm (configs are immutable; content change needs a new name).
