matrix-alertmanager-receiver: switch to modern community.docker docker_image modules

Replaces `community.docker.docker_image` with the modern
`docker_image_pull` module. Drops the `ansible_version` compatibility
ladder and the now-redundant `_container_image_force_pull` variable
(the new pull module handles registry refresh natively via `pull: always`).

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/5191.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

roles/custom/matrix-alertmanager-receiver/defaults/main.yml

@@ -32,7 +32,6 @@ matrix_alertmanager_receiver_container_src_path: "{{ matrix_alertmanager_receive
 
 matrix_alertmanager_receiver_container_image: "{{ matrix_alertmanager_receiver_container_image_registry_prefix }}metio/matrix-alertmanager-receiver:{{ matrix_alertmanager_receiver_container_image_tag }}"
 matrix_alertmanager_receiver_container_image_tag: "{{ matrix_alertmanager_receiver_version }}"
-matrix_alertmanager_receiver_container_image_force_pull: "{{ matrix_alertmanager_receiver_container_image.endswith(':main') }}"
 matrix_alertmanager_receiver_container_image_registry_prefix: "{{ matrix_alertmanager_receiver_container_image_registry_prefix_upstream }}"
 matrix_alertmanager_receiver_container_image_registry_prefix_upstream: "{{ matrix_alertmanager_receiver_container_image_registry_prefix_upstream_default }}"
 matrix_alertmanager_receiver_container_image_registry_prefix_upstream_default: "docker.io/"

roles/custom/matrix-alertmanager-receiver/tasks/install.yml

@@ -42,11 +42,9 @@
   register: matrix_alertmanager_receiver_support_files_result
 
 - name: Ensure matrix-alertmanager-receiver container image is pulled
-  community.docker.docker_image:
+  community.docker.docker_image_pull:
     name: "{{ matrix_alertmanager_receiver_container_image }}"
-    source: "{{ 'pull' if ansible_version.major > 2 or ansible_version.minor > 7 else omit }}"
-    force_source: "{{ matrix_alertmanager_receiver_container_image_force_pull if ansible_version.major > 2 or ansible_version.minor >= 8 else omit }}"
-    force: "{{ omit if ansible_version.major > 2 or ansible_version.minor >= 8 else matrix_alertmanager_receiver_container_image_force_pull }}"
+    pull: always
   when: "not matrix_alertmanager_receiver_container_image_self_build | bool"
   register: matrix_alertmanager_receiver_container_image_pull_result
   retries: "{{ devture_playbook_help_container_retries_count }}"

roles/custom/matrix-alertmanager-receiver/tasks/validate_config.yml

@@ -24,6 +24,7 @@
   when: "lookup('ansible.builtin.varnames', ('^' + item.old + '$'), wantlist=True) | length > 0"
   with_items:
     - {'old': 'matrix_alertmanager_receiver_container_image_name_prefix', 'new': 'matrix_alertmanager_receiver_container_image_registry_prefix'}
+    - {'old': 'matrix_alertmanager_receiver_container_image_force_pull', 'new': '<removed> (the new community.docker.docker_image_pull module handles this natively)'}
     - {'old': 'matrix_alertmanager_receiver_config_templating_computed_values', 'new': '<superseded by logic in the firing or resolved template; see https://github.com/metio/matrix-alertmanager-receiver/pull/94'}
     - {'old': 'matrix_alertmanager_receiver_config_templating_computed_values_auto', 'new': '<superseded by logic in the firing or resolved template; see https://github.com/metio/matrix-alertmanager-receiver/pull/94'}
     - {'old': 'matrix_alertmanager_receiver_config_templating_computed_values_custom', 'new': '<superseded by logic in the firing or resolved template; see https://github.com/metio/matrix-alertmanager-receiver/pull/94'}