pi-ansible/roles/docker_services/tasks/services/postfix.yml

# vim: ft=yaml.ansible
---
- name: Create Docker network for Postfix
  community.docker.docker_network:
    name: postfix
    state: present

- name: Create Postfix volume directories
  ansible.builtin.file:
    name: "{{ services.postfix.volume }}/dkim"
    owner: root
    mode: u=rwx,g=rx,o=rx
    state: directory

- name: Deploy Postfix Docker container
  community.docker.docker_container:
    name: postfix
    state: "{{ 'absent' if stop is defined and stop else 'started' }}"
    restart: "{{ stop is undefined or not stop }}"
    image: boky/postfix:{{ services.postfix.version }}
    restart_policy: always
    env:
      ALLOWED_SENDER_DOMAINS: "{{ sender_domains | join(' ') }}"
      HOSTNAME: "{{ services.postfix.domain }}"
      DKIM_AUTOGENERATE: "true"
    networks:
      - name: postfix
    volumes:
      - "{{ services.postfix.volume }}/dkim:/etc/opendkim/keys:rw"