The branch predated the official-image migration (coop-cloud/discourse#16), so its
merge-base was 0.8.1+3.5.0 and the PR's file list re-showed that migration's changes
as if this PR introduced them. The branch TREE already matched upstream; only its
history lacked those commits. Recording the merge leaves the PR's diff as what it
actually changes: app 3.5.3 -> 2026.7.1 and redis 7.4-alpine -> 8.10-alpine.
Conflict in compose.yml resolved in favour of the branch (both sides edited the same
image lines; the branch already carries upstream's official-image switch plus the
version bumps). Resulting tree is byte-identical to the pre-merge branch tree.
Move the db off the bitnami-era pgvector:pg17 + hand-rolled pg_upgrade entrypoint
to discourse/postgres:pg18 (pgvector + discourse's auto-upgrade layer). The image
runs the in-place major-version pg_upgrade itself on boot; the recipe configures it
via env:
- a small inline entrypoint injects the db password secret into $DB_PASSWORD (the
image expects it in the env, no *_FILE support)
- POSTGRES_USER (the install user pg_upgrade must match) defaults to 'postgres' --
correct for fresh installs and bitnami-origin clusters -- overridable from .env
- POSTGRES_INITDB_ARGS=--no-data-checksums so the new pg18 cluster matches pre-18
clusters (pg18 initdb enables checksums by default; pg_upgrade needs a match)
- mount postgresql_data at /var/lib/postgresql (versioned PGDATA .../18/docker)
- pg_backup.sh uses POSTGRES_USER for the dump/drop/recreate; fix paths
- document the POSTGRES_USER override in .env.sample, README and the release note
- drop entrypoint.postgres.sh.tmpl
Tested on cctest: pg17->pg18 upgrade preserves data and serves over HTTPS; fresh
install works; backup+restore round-trips.
Replaces the paywalled bitnamilegacy app with the official discourse/discourse
image behind Traefik. DB is reused as-is; uploads migrate from the legacy
bitnami volume idempotently. The wrapper entrypoint injects the db_password and
smtp_password secrets (the official image has no *_FILE support). SMTP env vars
are renamed to the official names; release notes cover the migration.
Recipe 0.8.1+3.5.0 -> 1.0.0+3.5.3 (major: new image, env/volume/port changes).
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