Fix issues reported by ansible-lint (var prefixes)

playbooks/roles/forgejo_runner/tasks/prompt-registration-token.yml

@@ -3,8 +3,11 @@
   ansible.builtin.pause:
     prompt: Enter a secret
     echo: false
-  register: promt_registration_token
+  register: forgejo_runner_promt_registration_token
 
-- name: Put registration token into env vars
-  ansible.builtin.set_fact:
-    forgejo_runner_env: "{{ forgejo_runner_env | combine({'FORGEJO_RUNNER_REGISTRATION_TOKEN': promt_registration_token.user_input}, recursive=True) }}"
+- name: Register runner
+  ansible.builtin.command:
+    cmd: docker compose run --rm -it app sh -c
+      'forgejo-runner register --no-interactive --token {{ forgejo_runner_promt_registration_token.user_input }} --instance ${FORGEJO_INSTANCE_URL}'
+    chdir: "{{ service_path }}"
+  changed_when: true