Setting up ntfy

Run the container

The default config serves over plain HTTP on port 80; put it behind a reverse proxy with TLS for anything reached outside the local network.

services:
  ntfy:
    image: binwiederhier/ntfy
    container_name: ntfy
    command: serve
    restart: unless-stopped
    ports:
      - "8080:80"
    volumes:
      - ./cache:/var/cache/ntfy

Pick a topic name and subscribe

There's no account system by default, a topic is just a name in the URL. Install the app (or open the web UI) and subscribe to a topic name that's specific enough not to collide with someone else's if this instance is ever reachable from outside.

Publish a test notification

Anything that can make an HTTP request can trigger a notification, which is what makes it easy to bolt onto scripts and automations.

curl -d "Backup finished" ntfy.example.com/my-topic-name