---
- import_tasks: precheck.yml
  tags:
    - always

- name: Ensure that modify_dir_path is defined
  assert:
    that:
      - modify_dir_path is defined
      - modify_dir_path | length > 0

- name: Create Dockerfile tempfile name
  tempfile:
    path: "{{ modify_dir_path }}"
    prefix: Dockerfile.
  register: dockerfile

- name: Copy Dockerfile to {{ dockerfile.path }}
  copy:
    src: "{{ modify_dir_path }}/Dockerfile"
    dest: "{{ dockerfile.path }}"

- name: Replace FROM directive
  lineinfile:
    path: "{{ dockerfile.path }}"
    regexp: "^FROM "
    line: "FROM {{ source_image }}"

- name: Add LABEL modified_append_tag={{ modified_append_tag }}
  lineinfile:
    path: "{{ dockerfile.path }}"
    insertafter: "^FROM "
    line: "LABEL modified_append_tag={{ modified_append_tag }}"

- name: Modify image from {{ modify_dir_path }}
  command: |
     {{ build_commands[container_build_tool] }} \
         --tag {{ target_image | default(source_image) }}{{ modified_append_tag }} \
         --file {{ dockerfile.path }} --network host ./
  # FIXME: buildah should not required root commands to build an image
  become: "{{ true if build_commands[container_build_tool] == 'buildah' else false }}"
  args:
    chdir: "{{ modify_dir_path }}"