services:
  gotify:
    image: gotify/server:3
    restart: unless-stopped
    environment:
      # The admin is made from these when Gotify creates its database, at the first start, before
      # it answers anyone; a later change of the password is made in Gotify's Users page.
      GOTIFY_DEFAULTUSER_NAME: ${ADMIN_USERNAME}
      GOTIFY_DEFAULTUSER_PASS: ${ADMIN_PASSWORD}
      # Only the admin adds users: nobody registers by the address.
      GOTIFY_REGISTRATION: "false"
      # The machine's proxy, whose X-Forwarded-For carries the visitor's address.
      GOTIFY_SERVER_TRUSTEDPROXIES: 10.192.0.0/10
      GOTIFY_SERVER_SECURECOOKIE: "true"
      TZ: Etc/UTC
    volumes:
      - data:/app/data
volumes:
  data: