- name: Cosmostat - Clean up old ws_node image tags
  block:
    # Grab a list of all tags the image has
    - name: Get all ws_node image tags
      command: |
        docker images --format "{{.Repository}}:{{.Tag}}" \
                      --filter=reference="ws_node:*"
      register: all_tags_raw
      changed_when: false

    # Turn that raw string into a list of just the tag names
    - name: Parse tag names out of the list
      set_fact:
        all_tags: >-
          {{ all_tags_raw.stdout_lines |
             map('regex_replace', '^ws_node:', '') |
             list }}

    # Keep everything *except* the one that ends with “:latest”
    - name: Build list of tags that should be removed
      set_fact:
        tags_to_remove: "{{ all_tags | difference(['latest']) }}"

    # Remove each old tag
    - name: Delete old ws_node image tags
      community.docker.docker_image:
        name: ws_node
        tag: "{{ item }}"
        state: absent
      loop: "{{ tags_to_remove }}"
      when: tags_to_remove | length > 0
  when: tags_to_remove | length > 0
  tags:
    - cleanup