generate.yaml

---
- hosts: localhost
  gather_facts: false
  pre_tasks:
    - name: Check if tags is not float
      assert:
        that:
          - "'float' not in reexported_images|json_query('[].*[][]')|map('type_debug')"

    - name: Create a directory for export
      become: true
      file:
        path: "{{ directory }}"
        state: directory
      with_items: '{{ reexported_images }}'
      loop_control:
        label: "{{ directory }}"
      vars:
        directory: '{{ docker_images_dir }}/{{ item.name|replace (".", "_") }}'

    - name: Create directory for registry structure
      become: true
      file:
        path: "{{ item }}"
        state: directory
      with_items:
        - '{{ registry_blobs_dir }}'
        - '{{ registry_manifests_dir }}'
        - '{{ registry_tags_dir }}'

  tasks:
    - name: Archive image of interest into local directory
      become: true
      command:
        cmd: "skopeo copy docker://{{ container }} dir:{{ filename }}"
        creates: "{{ filename }}"
      loop_control:
        label: "{{ item.0.name }}:{{ item.1 }}"
      with_subelements:
        - '{{ reexported_images }}'
        - tags
      vars:
        filename: '{{ docker_images_dir }}/{{ item.0.name|replace (".", "_") }}/{{ item.1|replace (".", "_") }}'
        container: '{{ item.0.name }}:{{ item.1 }}'

    - name: Hardlink image blobs
      become: true
      synchronize:
        src: "{{ filename }}/"
        dest: "{{ registry_blobs_dir }}/"
        link_dest: "{{ filename }}/"
        rsync_opts:
          - "--exclude=manifest.json"
          - "--exclude=version"
      loop_control:
        label: "{{ item.0.name }}:{{ item.1 }}"
      with_subelements:
        - '{{ reexported_images }}'
        - tags
      vars:
        filename: '{{ docker_images_dir }}/{{ item.0.name|replace (".", "_") }}/{{ item.1|replace (".", "_") }}'
        container: '{{ item.0.name }}:{{ item.1 }}'

    - name: Get manifest digest
      become: true
      command:
        cmd: "skopeo manifest-digest {{ filename }}/manifest.json"
      register: manifest_digest
      changed_when: false
      loop_control:
        label: "{{ item.0.name }}:{{ item.1 }}"
      with_subelements:
        - '{{ reexported_images }}'
        - tags
      vars:
        filename: '{{ docker_images_dir }}/{{ item.0.name|replace (".", "_") }}/{{ item.1|replace (".", "_") }}'
        container: '{{ item.0.name }}:{{ item.1 }}'

    - name: Generate docker images hash map
      set_fact:
        docker_v2: "{{ docker_v2|default([])|combine({ image: sha256 }) }}"
        manifest: "{{ manifest|default([])|combine({ filename: sha256 }) }}"
        repos: "{{ repos|default([]) + [ repo ] }}"
      loop_control:
        label: "{{ image }}"
      with_items: "{{ manifest_digest|json_query('results[*]') }}"
      vars:
        repo: "{{ item|json_query('item[0].name') }}"
        image: "{{ item|json_query('item[0].name') }}:{{ item|json_query('item[1]') }}"
        filename: "{{ item|json_query('cmd[2]') }}"
        sha256: "{{ item|json_query('stdout')|replace('sha256:', '') }}"

    - name: Hardlink manifest files
      file:
        src: "{{ filename }}"
        dest: "{{ registry_manifests_dir }}/{{ sha256 }}.json"
        state: hard
      loop_control:
        label: "{{ image }}"
      with_items: "{{ manifest_digest|json_query('results[*]') }}"
      vars:
        image: "{{ item|json_query('item[0].name') }}:{{ item|json_query('item[1]') }}"
        filename: "{{ item|json_query('cmd[2]') }}"
        sha256: "{{ item|json_query('stdout')|replace('sha256:', '') }}"

    - name: Generate tags
      with_items: '{{ reexported_images }}'
      copy:
        content: "{{ image|to_json }}"
        dest: "{{ registry_tags_dir }}/{{ item.name|hash('md5') }}.json"
      loop_control:
        label: '{{ item.name }}'
      vars:
        image:
          name: '{{ item.name }}'
          tags: '{{ item.tags }}'

    - name: Create db file
      copy:
        content: "{{ docker_v2|to_json }}"
        dest: "{{ registry_dir }}/images.json"

    - name: Create catalog file
      copy:
        content: "{{ catalog|to_json }}"
        dest: "{{ registry_dir }}/catalog.json"
      vars:
        catalog:
          repositories: "{{ repos|unique }}"