feat(deploy): marketplace scaffolds for Railway, Hostinger, DigitalOcean

deploy/digitalocean/README.md

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+# Deploy Alby Hub on DigitalOcean (Marketplace 1-Click App)
+
+A submission-ready scaffold for publishing Alby Hub as a DigitalOcean Marketplace 1-Click Droplet App. Follows the layout documented at [digitalocean/marketplace-partners](https://github.com/digitalocean/marketplace-partners).
+
+## What this scaffold produces
+
+A Droplet image (Ubuntu 24.04) with:
+- docker-ce pre-installed
+- `ghcr.io/getalby/hub:latest` pre-pulled
+- caddy 2 for TLS termination (Let's Encrypt)
+- A `systemd` unit that runs Alby Hub at boot with a persistent `/opt/albyhub/data` volume
+- A first-boot cloud-init script that prompts for `DOMAIN` via droplet user-data or auto-configures IP-only access
+- A first-login MOTD with the Hub URL and onboarding steps
+
+## Directory layout
+
+```
+deploy/digitalocean/
+├── README.md                               # this file
+├── marketplace-image.json                  # Packer template (input to `packer build`)
+├── scripts/
+│   ├── 01-install-albyhub.sh               # installs docker, caddy, pulls image, drops systemd unit
+│   ├── 90-cleanup.sh                       # DigitalOcean-required log/history cleanup
+│   └── 99-img_check.sh                     # DigitalOcean-required image validation
+└── files/
+    ├── etc/
+    │   ├── systemd/system/albyhub.service  # systemd unit for the container
+    │   ├── caddy/Caddyfile                 # caddy reverse-proxy config
+    │   └── update-motd.d/99-albyhub        # first-login message
+    └── var/lib/cloud/scripts/per-instance/
+        └── 01-albyhub-firstboot.sh         # first-boot config (runs once on each new droplet)
+```
+
+## Building the image
+
+Prerequisites: `packer` ≥ 1.9, a DigitalOcean API token with `write` scope.
+
+```bash
+export DIGITALOCEAN_API_TOKEN=dop_v1_...
+packer init deploy/digitalocean/marketplace-image.json
+packer build deploy/digitalocean/marketplace-image.json
+```
+
+Packer creates a snapshot in your DO account. To test: launch a droplet from that snapshot, wait ~60 seconds, SSH in, read the MOTD, open the URL.
+
+## Submitting to the Marketplace
+
+1. Apply at [digitalocean.com/landing/partner-application](https://www.digitalocean.com/landing/partner-application) (Partner Pod program).
+2. Fork [digitalocean/marketplace-partners](https://github.com/digitalocean/marketplace-partners) and open a PR that references the snapshot ID.
+3. Provide marketing assets:
+   - Logo: [doc/logo.svg](../../doc/logo.svg)
+   - Category: `Blockchain` (they have a dedicated bitcoin subcategory)
+   - Short description: "Your own bitcoin lightning node — connectable, feature-rich, self-sovereign."
+   - Long description: adapt the top of the main [README.md](../../README.md).
+   - Recommended droplet size: **Basic Regular 2 GB RAM / 1 vCPU / 50 GB SSD** ($12/mo at the time of writing). Call out that 1 GB is not enough for the embedded LDK node.
+4. Iterate on DO's validation feedback (their reviewers will run `99-img_check.sh` and manual checks).
+
+## Droplet user-data options
+
+Users can pre-configure the deploy by passing cloud-init user-data when creating the droplet:
+
+```yaml
+#cloud-config
+write_files:
+  - path: /etc/albyhub/hub.env
+    content: |
+      DOMAIN=albyhub.example.com
+      BASE_URL=https://albyhub.example.com
+```
+
+If `DOMAIN` is set, Caddy requests a Let's Encrypt cert automatically on first boot. If not, the droplet serves Hub on `http://<public-ip>:8080` — the MOTD walks users through setting a domain afterwards.
+
+## Affiliate attribution
+
+Add `?refcode=albyhub` (or whatever Alby's DO affiliate code is at submission time) to every "Deploy on DigitalOcean" link in marketing materials. Per DO's affiliate terms: 10%/mo for 12 months on referred spend + $25 per paying referral after first $25 spend.
+
+## Caveats to surface on the listing page
+
+- **Backup `/opt/albyhub/data` regularly.** Holds the encrypted seed, channel state, and SQLite db. Loss = loss of funds.
+- **Lightning p2p port 9735 is opened in the droplet firewall by the provisioner.** If the user enables DigitalOcean's Cloud Firewall on top, they must allow 9735 there too.
+- **Self-custody tradeoff.** Same wording as the Hostinger listing — a VPS-hosted lightning node is less sovereign than a home node-distribution.
+
+## Support surface
+
+A new Alby Hub release that changes the container interface must trigger a new Packer build + snapshot + marketplace update. Add to the Hub release checklist. DO supports "update image in place" via a new snapshot push — existing users don't auto-upgrade, so release notes must tell them to `docker compose pull && docker compose up -d` (or use the MOTD update hint).

deploy/digitalocean/files/etc/caddy/Caddyfile

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+# Caddy terminates TLS on :443 and proxies to the Alby Hub container on 127.0.0.1:8080.
+# The DOMAIN placeholder is rewritten by /var/lib/cloud/scripts/per-instance/01-albyhub-firstboot.sh
+# based on droplet user-data. If no DOMAIN is set, the firstboot script replaces the whole
+# file with a :80 site block so Hub is reachable over plain HTTP.
+
+{$DOMAIN:localhost} {
+	reverse_proxy 127.0.0.1:8080
+}

deploy/digitalocean/files/etc/systemd/system/albyhub.service

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+[Unit]
+Description=Alby Hub (bitcoin lightning node)
+After=docker.service network-online.target
+Requires=docker.service
+Wants=network-online.target
+
+[Service]
+Type=simple
+EnvironmentFile=-/etc/albyhub/hub.env
+Environment=ALBYHUB_IMAGE=ghcr.io/getalby/hub:latest
+ExecStartPre=-/usr/bin/docker rm -f albyhub
+ExecStart=/usr/bin/docker run --rm --name albyhub \
+  --env-file /etc/albyhub/hub.env \
+  -e WORK_DIR=/data/albyhub \
+  -e LDK_LISTENING_ADDRESSES=[::]:9735 \
+  -v /opt/albyhub/data:/data \
+  -p 127.0.0.1:8080:8080 \
+  -p 9735:9735 \
+  ${ALBYHUB_IMAGE}
+ExecStop=/usr/bin/docker stop albyhub
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target

deploy/digitalocean/files/etc/update-motd.d/99-albyhub

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+#!/bin/sh
+# First-login motd for Alby Hub droplets.
+
+PUBLIC_IP=$(curl -s --max-time 2 http://169.254.169.254/metadata/v1/interfaces/public/0/ipv4/address || echo "<your-droplet-ip>")
+DOMAIN=$(grep -s '^DOMAIN=' /etc/albyhub/hub.env | cut -d= -f2-)
+
+cat <<EOF
+
+ ✨ Alby Hub is installed on this droplet.
+
+  Status:      systemctl status albyhub
+  Logs:        journalctl -u albyhub -f
+  Data:        /opt/albyhub/data   (BACK THIS UP — holds your seed and channel state)
+  Config:      /etc/albyhub/hub.env
+
+EOF
+
+if [ -n "$DOMAIN" ]; then
+  echo "  Open Alby Hub:  https://$DOMAIN"
+else
+  echo "  Open Alby Hub:  http://$PUBLIC_IP:8080"
+  echo ""
+  echo "  To enable TLS, set DOMAIN in /etc/albyhub/hub.env, point your DNS at"
+  echo "  $PUBLIC_IP, then run:  systemctl restart caddy albyhub"
+fi
+
+echo ""

deploy/digitalocean/files/var/lib/cloud/scripts/per-instance/01-albyhub-firstboot.sh

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+#!/bin/bash
+# Runs once on the first boot of a droplet launched from the Alby Hub marketplace snapshot.
+# Reads /etc/albyhub/hub.env (optionally pre-populated via cloud-init user-data) and
+# rewrites the Caddy config to match: TLS + domain if DOMAIN is set, plain HTTP otherwise.
+set -euo pipefail
+
+ENV_FILE=/etc/albyhub/hub.env
+CADDYFILE=/etc/caddy/Caddyfile
+
+touch "$ENV_FILE"
+
+DOMAIN=$(grep -s '^DOMAIN=' "$ENV_FILE" | cut -d= -f2- || true)
+
+if [ -n "$DOMAIN" ]; then
+  cat > "$CADDYFILE" <<EOF
+$DOMAIN {
+	reverse_proxy 127.0.0.1:8080
+}
+EOF
+  grep -q '^BASE_URL=' "$ENV_FILE" || echo "BASE_URL=https://$DOMAIN" >> "$ENV_FILE"
+else
+  # No domain — expose Hub on :80 over plain HTTP for IP-based access.
+  cat > "$CADDYFILE" <<EOF
+:80 {
+	reverse_proxy 127.0.0.1:8080
+}
+EOF
+fi
+
+systemctl restart caddy
+systemctl restart albyhub

deploy/digitalocean/marketplace-image.json

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+{
+  "variables": {
+    "token": "{{env `DIGITALOCEAN_API_TOKEN`}}",
+    "image_name": "albyhub-snapshot-{{timestamp}}",
+    "albyhub_image": "ghcr.io/getalby/hub:latest"
+  },
+  "builders": [
+    {
+      "type": "digitalocean",
+      "api_token": "{{user `token`}}",
+      "image": "ubuntu-24-04-x64",
+      "region": "fra1",
+      "size": "s-1vcpu-2gb",
+      "ssh_username": "root",
+      "snapshot_name": "{{user `image_name`}}",
+      "droplet_name": "packer-albyhub-{{timestamp}}"
+    }
+  ],
+  "provisioners": [
+    {
+      "type": "file",
+      "source": "files/",
+      "destination": "/tmp/files"
+    },
+    {
+      "type": "shell",
+      "inline": [
+        "cp -r /tmp/files/* /",
+        "rm -rf /tmp/files"
+      ]
+    },
+    {
+      "type": "shell",
+      "environment_vars": [
+        "ALBYHUB_IMAGE={{user `albyhub_image`}}",
+        "DEBIAN_FRONTEND=noninteractive"
+      ],
+      "scripts": [
+        "scripts/01-install-albyhub.sh",
+        "scripts/90-cleanup.sh",
+        "scripts/99-img_check.sh"
+      ]
+    }
+  ]
+}

deploy/digitalocean/scripts/01-install-albyhub.sh

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+#!/bin/bash
+# Provisioner: install docker + caddy, pre-pull Alby Hub image, register systemd unit.
+# Runs during Packer build against a fresh Ubuntu 24.04 droplet.
+set -euxo pipefail
+
+: "${ALBYHUB_IMAGE:=ghcr.io/getalby/hub:latest}"
+
+apt-get update
+apt-get install -y ca-certificates curl gnupg ufw
+
+install -m 0755 -d /etc/apt/keyrings
+curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
+chmod a+r /etc/apt/keyrings/docker.gpg
+echo \
+  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
+  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" > /etc/apt/sources.list.d/docker.list
+
+curl -fsSL https://dl.cloudsmith.io/public/caddy/stable/gpg.key | gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
+curl -fsSL https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt | tee /etc/apt/sources.list.d/caddy-stable.list
+
+apt-get update
+apt-get install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin caddy
+
+docker pull "$ALBYHUB_IMAGE"
+
+mkdir -p /opt/albyhub/data /etc/albyhub
+touch /etc/albyhub/hub.env
+
+ufw --force enable
+ufw allow OpenSSH
+ufw allow 80/tcp
+ufw allow 443/tcp
+ufw allow 9735/tcp
+
+systemctl enable albyhub.service
+systemctl enable caddy

deploy/digitalocean/scripts/90-cleanup.sh

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+#!/bin/bash
+# Standard DigitalOcean Marketplace cleanup: strip logs, shell history, cloud-init state,
+# and package-manager caches before snapshot. Mirrors the upstream sample in
+# https://github.com/digitalocean/marketplace-partners/blob/master/scripts/90-cleanup.sh
+set -euxo pipefail
+
+apt-get -y autoremove
+apt-get -y autoclean
+
+rm -rf /tmp/* /var/tmp/*
+rm -rf /var/log/*.gz /var/log/*.[0-9] /var/log/*-????????
+: > /var/log/wtmp
+: > /var/log/lastlog
+: > /var/log/auth.log
+: > /var/log/syslog
+
+rm -rf /root/.ssh /root/.bash_history /root/.cache /root/.lesshst
+rm -rf /home/*/.ssh /home/*/.bash_history /home/*/.cache /home/*/.lesshst
+
+cloud-init clean --logs
+rm -rf /var/lib/cloud/instances/*
+
+truncate -s 0 /etc/machine-id

deploy/digitalocean/scripts/99-img_check.sh

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+#!/bin/bash
+# DigitalOcean Marketplace image validator (local dry-run). The official img_check.sh
+# is shipped via https://github.com/digitalocean/marketplace-partners and must pass
+# before submission. This local version covers the Alby Hub-specific invariants.
+set -euo pipefail
+
+fail() { echo "FAIL: $*" >&2; exit 1; }
+
+command -v docker >/dev/null || fail "docker not installed"
+docker image inspect ghcr.io/getalby/hub:latest >/dev/null || fail "alby hub image not pre-pulled"
+command -v caddy >/dev/null || fail "caddy not installed"
+
+[[ -f /etc/systemd/system/albyhub.service ]] || fail "albyhub.service missing"
+systemctl is-enabled albyhub.service >/dev/null || fail "albyhub.service not enabled"
+systemctl is-enabled caddy >/dev/null || fail "caddy not enabled"
+
+[[ -f /etc/caddy/Caddyfile ]] || fail "Caddyfile missing"
+[[ -f /var/lib/cloud/scripts/per-instance/01-albyhub-firstboot.sh ]] || fail "firstboot script missing"
+[[ -f /etc/update-motd.d/99-albyhub ]] || fail "motd missing"
+[[ -d /opt/albyhub/data ]] || fail "/opt/albyhub/data not created"
+
+echo "OK: image looks valid for marketplace submission"

deploy/hostinger/Caddyfile

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+{$DOMAIN} {
+	reverse_proxy albyhub:8080
+}

deploy/hostinger/README.md

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+# Deploy Alby Hub on Hostinger VPS
+
+A Hostinger Application Catalog template for Alby Hub. Hostinger wraps a `docker-compose.yml` with a prompt-driven env-var UI and ships it under their VPS Docker templates (see precedents: [openclaw](https://www.hostinger.com/vps/docker/openclaw), [hermes-agent](https://www.hostinger.com/vps/docker/hermes-agent)).
+
+## Artifacts in this directory
+
+- **[docker-compose.yml](./docker-compose.yml)** — two services: Alby Hub (port 8080, lightning p2p port 9735) and an optional Caddy reverse proxy (ports 80/443) activated with the `tls` compose profile. Volume `albyhub-data` persists the SQLite db, seed, channel state, and LDK data.
+- **[Caddyfile](./Caddyfile)** — reverse proxy config that terminates TLS for `${DOMAIN}` and proxies to `albyhub:8080`. Caddy auto-provisions a Let's Encrypt cert on startup when a real DNS name is set.
+
+## Deploying without submitting to Hostinger (works today)
+
+Any Hostinger VPS with the Ubuntu 24.04 + Docker template already provisioned can run this:
+
+```bash
+curl -O https://raw.githubusercontent.com/getAlby/hub/master/deploy/hostinger/docker-compose.yml
+curl -O https://raw.githubusercontent.com/getAlby/hub/master/deploy/hostinger/Caddyfile
+
+# No TLS (IP-only access on port 8080):
+docker compose up -d
+
+# With TLS (requires DNS pointed at the VPS):
+DOMAIN=albyhub.example.com BASE_URL=https://albyhub.example.com docker compose --profile tls up -d
+```
+
+## Submitting to the Hostinger Application Catalog
+
+Hostinger does not publish a public submission process. Reach out to Hostinger BD / partnerships with this package:
+
+| Asset | Source |
+|---|---|
+| Title | `Alby Hub` |
+| Tagline | `Your own bitcoin lightning node` |
+| Category | `Finance` / `Self-hosted` |
+| Logo (SVG) | [doc/logo.svg](../../doc/logo.svg) |
+| Long description | Adapt the top of the main [README.md](../../README.md) |
+| `docker-compose.yml` | [./docker-compose.yml](./docker-compose.yml) |
+| Reverse proxy config | [./Caddyfile](./Caddyfile) |
+| User-facing env-var schema | See table below |
+| Minimum VPS plan | KVM 2 (2 GB RAM, 1 shared vCPU, 50 GB NVMe) |
+| Post-deploy URL | `http://{public_ip}:8080` (or `https://{domain}` when TLS profile active) |
+
+### Env vars to surface in Hostinger's template UI
+
+| Key | Label | Default | Required |
+|---|---|---|---|
+| `DOMAIN` | Your domain (optional, for TLS) | *empty* | No |
+| `BASE_URL` | Public URL of this Hub (e.g. `https://albyhub.example.com`) | `http://localhost:8080` | No |
+| `LDK_ESPLORA_SERVER` | Blockchain API endpoint | `https://electrs.getalbypro.com` | No |
+
+Every other env var from [config/models.go](../../config/models.go) keeps its default; do not surface them in the Hostinger UI or users will be overwhelmed.
+
+## Caveats to surface on the listing page
+
+- **Backup the `albyhub-data` volume regularly.** It holds the encrypted seed, channel state, and SQLite db. Loss = loss of funds.
+- **Lightning p2p on port 9735 needs the VPS firewall open.** Hostinger's default firewall blocks it; link users to Hostinger's firewall docs.
+- **Self-custody tradeoff.** A VPS-hosted lightning node is less sovereign than a home node-distribution (umbrel, start9). Mention this honestly in the listing so users choose eyes-open.
+
+## Support surface
+
+A new Alby Hub release that changes the container interface must also be smoke-tested against this compose file. Add to the Hub release checklist.