stacks/miniflux: self-hosted RSS reader + News group on homepage

Adds Miniflux on ana-docker as the unified inbox for tech blogs,
Hacker News, lobste.rs, and selected subreddits. Reddit serves clean
RSS for any sub at https://reddit.com/r/<sub>/.rss, so subreddit
follows fold into the same inbox as everything else — no Reddit
account needed, no manual polling.

Stack:
  stacks/miniflux/
    compose.yaml          — miniflux + bundled postgres:16
    .env.example          — placeholders for DB password + admin user
    starter-feeds.opml    — initial subscriptions (HN, Lobste.rs,
                            r/selfhosted, r/homelab, r/LocalLLaMA, r/nba)
    README.md             — deploy / OPML import / r/nba spoiler
                            block-list / backup / update flow

Postgres bundled with the stack (not pfi-postgres) — single-user RSS
DB is tiny and the bundle keeps the dependency graph flat.

Homepage gets a new 'News' group at the TOP of the Main tab (above
Monitoring) so the Miniflux card sits prominently. The card itself
auto-discovers via the homepage.* labels on the miniflux container.

Per-feed block-list rule for r/nba documented in README — Reddit's
RSS titles for game threads include scores ("Lakers 108 - Warriors
102 [Final]") which spoil the game; a regex catches the score
patterns and skips those entries while keeping discussion/highlights.

Deploy:
  scripts/elway ana-docker --playbook playbooks/deploy-miniflux.yaml

Then edit /opt/docker/compose/miniflux/.env on the host to fill in
the two CHANGE_ME passwords and `docker compose up -d` again.
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# Miniflux
Minimal self-hosted RSS reader ([miniflux.app](https://miniflux.app/),
Apache 2.0, ~30 MB Go single-binary). One unified inbox for tech
blogs, Hacker News, Lobste.rs, and selected subreddits.
## Why this stack
The fleet doesn't have a feed reader yet. Reddit subreddits expose
clean RSS feeds at `https://reddit.com/r/<sub>/.rss`, so subscribing
to your relevant subs alongside HN / blogs gives you a single place
to scan recent activity — no Reddit account needed, no polling
multiple sites by hand.
Self-hosted on `ana-docker` (10.250.50.70). Postgres bundled in the
stack rather than sharing pfi-postgres — keeps the dependency graph
flat and the DB is tiny (single-user).
## Deploy
```bash
scripts/elway ana-docker --playbook playbooks/deploy-miniflux.yaml
```
Cold deploy budget: ~250 MB image pull (postgres:16 + miniflux),
~10 s startup, ~1 s warmup.
After deploy, the .env on ana-docker still has placeholder passwords
— **edit those before first start succeeds**:
```bash
ssh ana-docker '
cd /opt/docker/compose/miniflux
sed -i "s|^MINIFLUX_DB_PASSWORD=.*|MINIFLUX_DB_PASSWORD=$(openssl rand -base64 24)|" .env
sed -i "s|^MINIFLUX_ADMIN_PASSWORD=.*|MINIFLUX_ADMIN_PASSWORD=$(openssl rand -base64 18)|" .env
grep ^MINIFLUX_ADMIN_PASSWORD .env # one-time copy this for first login
docker compose up -d
'
```
Then login at <http://10.250.50.70:8080> with the username from `.env`
(`lkraven` by default) and the printed admin password.
## Initial feed setup — OPML import
A starter OPML at `stacks/miniflux/starter-feeds.opml` covers:
- Hacker News + Lobste.rs
- r/selfhosted, r/homelab, r/LocalLLaMA
- r/nba (with spoiler caveat — see below)
Import via Miniflux UI: **Settings → Import → Choose File** → select
the OPML → Submit. All feeds appear in their categories; first
refresh fetches the most recent posts within seconds.
## r/nba spoiler block-list
Subreddit-RSS titles for game-day threads include final scores
(e.g. `Lakers 108 - Warriors 102 [Final]`). Miniflux supports
per-feed regex block rules to skip these.
After importing the OPML:
1. Go to **Feeds** → click **r/nba** → **Edit Feed**
2. In the **Block Filter** field, paste:
```
\b\d{2,3}\s*[-–]\s*\d{2,3}\b|\[Final|Final Score|Game Thread.*\d{2,3}
```
3. Save. Past matching entries stay (they were already fetched);
future fetches skip score-bearing headlines. Discussion threads,
highlights, and meta-content still come through.
If a real post slips through with a score in the title, refine the
regex.
## Adding subreddits later
Reddit RSS URL patterns:
| URL | Returns |
|---|---|
| `https://reddit.com/r/<sub>/.rss` | Newest posts (firehose) |
| `https://reddit.com/r/<sub>/top/.rss?t=day` | Top-of-day (less spam) |
| `https://reddit.com/r/<sub>/top/.rss?t=week` | Top-of-week |
| `https://reddit.com/r/<sub>/hot/.rss` | Currently hot |
`top/.rss?t=day` is the lowest-noise option for high-volume subs
where you want highlights only.
In Miniflux: **Feeds → New Feed → URL**, paste, pick a category.
## Backup
Miniflux state lives in the named volume `miniflux-db-data`. To
include in restic, add a `pre-backup.sh` step on ana-docker that
dumps the DB to a stage path:
```bash
docker exec miniflux-db pg_dump -U miniflux miniflux \
> /var/lib/restic/stage/miniflux.sql
```
Then restic's regular sweep picks up the SQL file. Subscriptions and
read-state are tiny (~MB even with months of history); the dump is
fast.
## Updating
```bash
ssh ana-docker '
cd /opt/docker/compose/miniflux
sed -i "s|^MINIFLUX_VERSION=.*|MINIFLUX_VERSION=<new>|" .env
docker compose pull miniflux
docker compose up -d
'
```
Migrations run automatically on container start (`RUN_MIGRATIONS=1`
in compose.yaml).