Docker compose

version: '3'
services:
  ntfy:
    image: binwiederhier/ntfy
    restart: unless-stopped
    environment:
      NTFY_BASE_URL: https://your-domain.io
      NTFY_BEHIND_PROXY: true
      NTFY_ATTACHMENT_CACHE_DIR: /var/lib/ntfy/attachments
      NTFY_CACHE_FILE: /var/lib/ntfy/cache.db
      NTFY_UPSTREAM_BASE_URL: https://ntfy.sh
    volumes:
      - ./:/var/lib/ntfy
    ports:
      - 4280:80
    command: serve

NTFY_BEHIND_PROXY: true use it if you are behind a proxy or if you use cloudflare to register your DNS

NTFY_UPSTREAM_BASE_URL: https://ntfy.sh is used to push the notification on IOS

4280:80 redirect the host's port 4280 to the port 80 of the container