Add README

README.md

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+# carloselugo.com — Docker Stack
+
+Self-hosted infrastructure running on a single server, reverse-proxied by Caddy with automatic HTTPS.
+
+## Services
+
+| Service | URL | Description |
+|---|---|---|
+| Frontend | [carloselugo.com](https://carloselugo.com) | Personal site — Vite + nginx (multi-stage build) |
+| Uptime Kuma | [uptime.carloselugo.com](https://uptime.carloselugo.com) | Uptime monitoring |
+| Netdata | [metrics.carloselugo.com](https://metrics.carloselugo.com) | System metrics |
+| ntfy | [ntfy.carloselugo.com](https://ntfy.carloselugo.com) | Push notifications |
+| Dozzle | [logs.carloselugo.com](https://logs.carloselugo.com) | Container log viewer |
+| Gitea | [git.carloselugo.com](https://git.carloselugo.com) | Self-hosted Git |
+
+> uptime, metrics, and logs are restricted to whitelisted IPs + basic auth.
+
+## Structure
+
+```
+/opt/web/
+├── Caddyfile               # Reverse proxy config (TLS, routing, auth)
+├── docker-compose.yml      # All services
+├── frontend/               # Personal site source
+│   ├── Dockerfile
+│   ├── src/
+│   └── nginx.conf
+├── ntfy/
+│   └── config/
+│       └── server.yml
+└── dozzle/
+    └── data/
+```
+
+## Stack
+
+- **Reverse proxy** — Caddy 2 (automatic HTTPS via Let's Encrypt, HTTP/3)
+- **Frontend** — Vite build → nginx:alpine
+- **Git** — Gitea (SQLite, SSH on port 2222)
+- **Monitoring** — Netdata (host metrics) + Uptime Kuma (endpoint checks)
+- **Notifications** — ntfy (push to mobile, auth-protected)
+- **Logs** — Dozzle
+
+## Usage
+
+```bash
+# Start all services
+docker compose up -d
+
+# Start a single service
+docker compose up -d gitea
+
+# View logs
+docker compose logs -f caddy
+
+# Reload Caddy config without downtime
+docker exec caddy caddy reload --config /etc/caddy/Caddyfile
+```
+
+## Git workflow
+
+Push to this repo from the server:
+
+```bash
+git remote add origin ssh://git@localhost:2222/carlitosbond/web.git
+git push
+```
+
+From an external machine (port 2222 must be open in firewall):
+
+```bash
+git remote add origin ssh://git@git.carloselugo.com:2222/carlitosbond/web.git
+git push
+```
+
+## Notes
+
+- Umami analytics is disabled (commented out in `docker-compose.yml`) — uncomment to re-enable.
+- Netdata is pinned to CPUs 0–1 with low CPU priority to avoid impacting other workloads.
+- ntfy denies all access by default — users must be created with `ntfy user add`.