pi-ansible/roles/docker_services/handlers/main.yml

# vim: ft=yaml.ansible
---
- name: Build Caddy Docker image
  community.docker.docker_image:
    name: custom/caddy:{{ services.caddy.version }}-alpine
    source: build
    build:
      path: "{{ services.caddy.volume }}"
      dockerfile: caddy.Dockerfile
    state: present