Frank
476b21b85d
Deployed live at 91e9410 (gluetun+marreta+caddy), authentik provider pk 13,
guard chain verified end-to-end. Documented that Laravel APP_KEY must carry the
base64: prefix — a bare base64 key 500s every app route with 'Unsupported
cipher or incorrect key length' while /up still passes.
226 lines
10 KiB
Markdown
226 lines
10 KiB
Markdown
---
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type: reference
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title: Marreta on Dankclaw
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description: The content-cleaning proxy (manualdousuario/marreta, Laravel/serversideup fpm-nginx) deployed as a rootless Quadlet pair that shares SearXNG's Gluetun netns for egress and sits behind the Anubis + Authentik guard chain at marreta.franksdank.cloud.
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tags:
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- dankclaw
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- marreta
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- proxy
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- gluetun
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- authentik
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- quadlet
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timestamp: 2026-09-12
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---
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# Marreta
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Marreta is a self-hosted **content-cleaning proxy**: you hand it a URL and it
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returns a stripped, readable version of the page — no paywall chrome, no
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tracking, no cookie walls. It is a Laravel 13 app on the
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`serversideup/php:8.4-fpm-nginx` image, with an optional headless-browser
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companion for JavaScript-heavy pages.
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**Host:** Dankclaw — **vhost:** `marreta.franksdank.cloud` (Caddy, guard-chained)
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— **Upstream:** host-published port `8082` (inside the Gluetun netns)
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— **Source:** <https://github.com/manualdousuario/marreta>
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## What it does (from the upstream README)
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- Fetches a target URL with a cascade of strategies: plain HTTP (curl), a
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headless browser (Lightpanda) for JS pages, and the Internet Archive
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(Wayback) as a last resort.
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- Strips paywall/consent/tracking markup and re-renders clean HTML.
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- Ships a Filament admin panel at `/admin` (login = `ADMIN_EMAIL` /
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`ADMIN_PASSWORD`) for settings and usage.
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- Health endpoint at `/up` (Laravel's built-in health route).
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## Topology
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Marreta runs as **two rootless Quadlet containers** that both join
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**Gluetun's network namespace** — the same tunnel [[SearXNG]] uses — so every
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outbound fetch exits over WireGuard, never the home IP.
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```mermaid
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graph LR
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C[Client] -->|HTTPS| TLS[Caddy TLS edge]
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TLS -->|challenge| AN[Anubis :8923]
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AN -->|auth decision| A16[Caddy :8016]
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A16 -->|Authentik| AUTH[authentik-server]
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AUTH -->|authenticated| A17[Caddy :8017]
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A17 -->|host marreta| PUB[host :8082]
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subgraph G[gluetun netns - WireGuard egress]
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PUB -->|8085| M[marreta :8085]
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M -->|ws loopback| B[marreta_browser :9222]
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end
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M -->|fetch| WG[WireGuard tunnel]
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B -->|fetch| WG
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```
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| Unit | File | Image | Netns | Listens |
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|------|------|-------|-------|---------|
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| `marreta.service` | `dankclaw/marreta/quadlet/marreta.container` | `ghcr.io/manualdousuario/marreta:latest` | `gluetun.container` | `8085` (nginx) |
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| `marreta-browser.service` | `dankclaw/marreta/quadlet/marreta-browser.container` | `docker.io/lightpanda/browser:nightly` | `gluetun.container` | `9222` (CDP) |
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Both units are boot-persistent (`WantedBy=default.target`) and self-healing
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(`Restart=always`), per the repo's Boot Persistence rule.
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## The port-collision resolution (why 8085)
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The shared netns **already has SearXNG on 8080**. Marreta's image
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(`serversideup/php:8.4-fpm-nginx`) defaults to `NGINX_HTTP_PORT=8080`, so a
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naive deploy would fail the moment nginx tried to bind a port SearXNG holds.
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The fix is a single env var, verified against the serversideup source:
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- The image sets `ENV NGINX_HTTP_PORT="8080"` and the site template is
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`listen ${NGINX_HTTP_PORT} default_server;`.
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- The image does **not** bake `conf.d/*.conf` (it `rm -rf`s them at build);
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the entrypoint `10-init-webserver-config.sh` runs `envsubst` over every
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`NGINX_*` variable **at container start**.
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- So `Environment=NGINX_HTTP_PORT=8085` in the quadlet relocates the listen
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port off the collision with no custom build.
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Marreta then publishes **nothing** of its own — the netns owner (Gluetun)
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publishes `8082:8085` on its behalf, exactly as it publishes `8081:8080`
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for SearXNG. Caddy dials `192.168.0.143:8082`.
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## Why netns sharing, not `PROXY_URL`
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Marreta supports a `PROXY_URL` env var, but it only covers the **curl**
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fetch strategy. The `BrowserFetchStrategy` connects to Lightpanda over CDP
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and passes **no proxy** — the browser makes its own connections. If the
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browser ran outside the tunnel it would leak the host's real egress IP on
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every JS-rendered page. Netns sharing is the only way to put **both** the
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app and the browser on the same exit, which is what "share the same Gluetun
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egress as SearXNG" requires. The browser is therefore reached on loopback
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(`ws://127.0.0.1:9222`) inside the shared netns.
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## Guard chain (behind Authentik)
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`marreta.franksdank.cloud` follows the standard chain documented in
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[[Anubis]] and [[Authentik]]:
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1. **Public edge** — the vhost proxies everything to `anubis:8923`
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(bot challenge), with `header_up X-Real-Ip {remote_host}`.
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2. **Auth decision** — Anubis dials Caddy's `http://:8016`, which proxies
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whole-request to `authentik-server:9000`.
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3. **Post-auth routing** — authenticated traffic returns to `http://:8017`,
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where `@marreta host marreta.franksdank.cloud` routes to
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`reverse_proxy 192.168.0.143:8082`.
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**Access model: any authenticated user.** The post-auth handler carries no
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group gate (unlike the homepage `/admin`, which requires the
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`homepage-admins` group). Anyone who can log in via Authentik can use
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Marreta.
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**Required provider (manual, one-time).** Before the vhost goes live, a
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proxy provider must exist on the embedded outpost or authenticated traffic
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hits the outpost error page instead of the app:
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```python
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# podman exec -i authentik-server ak shell < provider.py
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from authentik.core.models import Group
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from authentik.providers.proxy.models import ProxyProvider
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p = ProxyProvider.objects.filter(name="marreta").first() or ProxyProvider()
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p.name = "marreta"
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p.external_host = "https://marreta.franksdank.cloud/" # exact, trailing slash
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p.internal_host = "http://caddy:8017"
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p.save()
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```
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This is the "provider first, then route" ordering from the guard-chain
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runbook — the Anubis guard set, the Caddy TLS edge, and the provider list
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must change together.
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## Scheme / proxy trust
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Marreta ships `trustProxies(at: '172.16.0.0/12,10.0.0.0/8,192.168.0.0/16,127.0.0.1')`
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and forces `https` when `APP_URL` starts with `https://`. With
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`APP_URL=https://marreta.franksdank.cloud` the app honors the forwarded
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scheme and client IP through the whole chain, so there is no redirect loop
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or mixed-content breakage.
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## Secrets
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Three values, seeded into `/home/dank/Containers/marreta/env` (mode 0600,
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dank-owned so the rootless unit can read it — the grafana convention, not
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`/opt`):
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| Repo `.env` key | Mapped to (app) | Notes |
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|-----------------|-----------------|-------|
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| `MARRETA_APP_KEY` | `APP_KEY` | Laravel encryption key. **Must be the `base64:`-prefixed form**: `base64:$(openssl rand -base64 32)`. A bare base64 string (no prefix) is read as a raw key of the wrong length and every app route 500s with `Unsupported cipher or incorrect key length` at `Encrypter.php:61` (only `/up`, which skips the encrypter, still passes). Changing it after first boot invalidates encrypted session/cookie data. |
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| `MARRETA_ADMIN_EMAIL` | `ADMIN_EMAIL` | Admin panel login (created on first boot). |
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| `MARRETA_ADMIN_PASSWORD` | `ADMIN_PASSWORD` | Admin panel password. |
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The quadlet maps them with `Environment=APP_KEY=${MARRETA_APP_KEY}` etc.
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The `.container` files hold **no** secrets — only `${VAR}` placeholders.
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The SQLite DB + cache live in the `marreta_storage` named volume at
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`/var/www/html/storage/app` (podman auto-creates it and copyups the image's
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`www-data` ownership so the app can write).
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## Deploy
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```
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./scripts/deploy.sh dankclaw --service marreta
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```
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`deploy_marreta` seeds the env file (only if absent), installs both
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`.container` units, ensures Gluetun is up, then restarts the browser before
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the app. Because Marreta shares Gluetun's netns, the planner treats it as
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part of the Gluetun netns family: a change to `gluetun.container` or
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`searxng.network` also selects `marreta` (a Gluetun recreation tears the
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netns down and would otherwise orphan it).
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> **First deploy note:** adding `PublishPort=8082:8085` to `gluetun.container`
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> means the first deploy recreates Gluetun, which briefly cycles SearXNG and
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> Marreta together. Plan for the short tunnel restart.
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## Verification
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- **Unauthenticated:** `curl -s https://marreta.franksdank.cloud/` → the
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Anubis challenge page (grep body for `challenge`/`not a bot`). A 502 here
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means the chain is mis-wired.
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- **Post-auth routing:** `podman exec caddy sh -c "grep -n -A3 '@marreta host' /etc/caddy/Caddyfile"`
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after the deploy's reload line.
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- **Egress:** from inside the netns, `podman exec marreta curl -s https://ifconfig.co`
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must return the VPN exit IP, not the home IP.
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- **Port:** `podman exec marreta sh -c 'curl -fsS localhost:8085/up'` → 200;
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`curl http://192.168.0.143:8082/up` → 200.
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- **Test seam:** `bats tests/marreta_quadlet.bats` (17 contracts).
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### Live verification (deployed 2026-09-12, rev `91e9410`)
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Deployed via `deploy.sh dankclaw --service gluetun --service marreta --service
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caddy` (gluetun first to recreate the tunnel with the new `8082:8085` publish,
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which also cycles SearXNG's netns ref). Authentik `ProxyProvider` `marreta`
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registered (pk 13, `external_host=https://marreta.franksdank.cloud/`,
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`internal_host=http://caddy:8017`). Results:
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- Unauth edge → Anubis challenge page (not 502). TLS cert issued via DNS-01.
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- Post-auth sim (`caddy :8017` with `Host: marreta.franksdank.cloud`) → **200**.
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- `marreta` container health: **healthy**; `/` and `/admin/login` → 200.
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- Netns sharing proven: `gluetun`, `marreta`, `marreta_browser` all on the same
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`net:[…]` inode; marreta reads the CDP endpoint
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(`GET 127.0.0.1:9222/json/version` → `Lightpanda/1.0`).
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- SearXNG unaffected: `:8081` → 200 after the tunnel recreate.
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> **Gotcha hit during deploy:** the first seed used a bare-base64 `APP_KEY`,
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> which 500s every app route (see Secrets above). Fixed by re-keying with the
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> `base64:` prefix before any encrypted data was persisted.
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## Citations
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- Marreta upstream: <https://github.com/manualdousuario/marreta> (README,
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`compose.yml`, `bootstrap/app.php`, `app/Services/Fetch/BrowserFetchStrategy.php`,
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`lang/` directory listing).
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- serversideup/php fpm-nginx port mechanism: `serversideup/docker-php`
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`src/variations/fpm-nginx/Dockerfile` (`NGINX_HTTP_PORT="8080"`) and
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`src/s6/etc/entrypoint.d/10-init-webserver-config.sh` (`envsubst` over
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`NGINX_*` at start; `conf.d/*.conf` removed at build).
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- Lightpanda browser image: <https://hub.docker.com/r/lightpanda/browser>
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(`nightly` tag).
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- Guard-chain ordering and provider-first rule: [[Anubis]], [[Authentik]],
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and the `anubis-guard-chain-flip` runbook.
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- Netns egress pattern: [[SearXNG]], [[Gluetun]], [[Container Network Namespaces]].
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