Further nanna stuff: Update docker setup & gitea runner

ansible/roles/docker/defaults/main.yaml

@@ -0,0 +1,4 @@
+---
+docker_apt_arch: "amd64"
+docker_ubuntu_release: "{{ ansible_distribution_release }}"
+

ansible/roles/docker/tasks/main.yaml

@@ -25,12 +25,6 @@
     stdin: "{{ docker_gpg_key.content }}"
     creates: /usr/share/keyrings/docker-archive-keyring.gpg
 
-- name: Retrieve dpkg architecture
-  check_mode: false
-  ansible.builtin.command: dpkg --print-architecture
-  register: docker_dpkg_architecture
-  changed_when: false
-
 - name: Add Docker apt repository
   become: true
   ansible.builtin.template:
@@ -48,3 +42,4 @@
       - docker-ce
       - docker-ce-cli
       - containerd.io
+      - docker-compose-plugin

ansible/roles/docker/templates/docker.list.j2

@@ -1 +1 @@
-deb [arch={{ docker_dpkg_architecture.stdout }} signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable
+deb [arch={{ docker_apt_arch }} signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu {{ docker_ubuntu_release }} stable