monitoring/mqtt_exporter: Install from debian package

roles/deb_forgejo/defaults/main.yaml

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+deb_private_host: git.polyfloyd.net

roles/deb_forgejo/handlers/default.yaml

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+---
+- ansible.builtin.import_tasks:
+    file: ../../common/handlers/main.yaml

roles/deb_forgejo/tasks/main.yaml

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+---
+- tags: deb_forgejo
+  block:
+    - name: Install dependencies
+      apt:
+        name: apt-transport-https
+        state: present
+
+    - name: Install packaging key
+      get_url:
+        url: https://{{ item.host }}/api/packages/{{ item.owner }}/debian/repository.key
+        dest: /etc/apt/keyrings/{{ item.host }}-{{ item.owner }}.asc
+        mode: "0644"
+      with_items: "{{ deb_forgejo_repos }}"
+      notify: apt update
+
+    - name: Install sources.list
+      template:
+        src: sources.list
+        dest: /etc/apt/sources.list.d/deb-forgejo.list
+        owner: root
+        group: root
+        mode: "0644"
+      notify: apt update
+
+    - meta: flush_handlers

roles/deb_forgejo/templates/sources.list

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+# {{ ansible_managed }}
+
+{% for repo in deb_forgejo_repos %}
+deb [signed-by=/etc/apt/keyrings/{{ repo.host }}-{{ repo.owner }}.asc] https://{{ repo.host }}/api/packages/{{ repo.owner }}/debian {{ repo.distro | default('stable') }} {{ repo.component | default('main') }}
+{% endfor %}