Add Ubuntu 24.04 support

receptor_install_method=package will install receptor and
python3-receptorctl via apt.

molecule-ubuntu using Containerfile_ubuntu.j2.

molecule/default/Containerfile_ubuntu.j2

@@ -0,0 +1,6 @@
+FROM ubuntu:24.04
+
+RUN apt-get update && apt-get install -y \
+    init \
+    python3 \
+    && apt-get clean all

molecule/default/molecule.yml

@@ -30,6 +30,19 @@ platforms:
     volumes:
       - /sys/fs/cgroup:/sys/fs/cgroup:ro
 
+  - name: molecule-ubuntu
+    image: ubuntu:24.04
+    dockerfile: Containerfile_ubuntu.j2
+    pre_build_image: false
+    systemd: true
+    privileged: true
+    command: "/usr/lib/systemd/systemd"
+    tmpfs:
+      "/run": "rw,mode=1777"
+      "/tmp": "rw,mode=1777"
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:ro
+
 provisioner:
   name: ansible
   inventory:
@@ -42,3 +55,7 @@ provisioner:
         ansible_connection: containers.podman.podman
         podman_user: receptor
         podman_group: receptor
+      molecule-ubuntu:
+        ansible_connection: containers.podman.podman
+        podman_user: receptor
+        podman_group: receptor

roles/setup/tasks/setup-Debian.yml

@@ -1,4 +1,39 @@
 ---
+- name: Install receptor packages
+  ansible.builtin.package:
+    name: "{{ receptor_packages }}"
+    state: present
+  when:
+    - receptor_install_method == 'package'
+    - receptor_packages
+  notify:
+    - Restart Receptor
+
+# Installing receptor via a package manager already lays down
+# a systemd service file. Instead of replacing it with a new
+# systemd_receptor.service file, we can just use an overrides
+# file to tweak it.
+- name: Setup systemd overrides
+  when: receptor_install_method == 'package'
+  block:
+    - name: Ensure systemd override directory exists
+      ansible.builtin.file:
+        dest: "{{ systemd_folder }}/receptor.service.d"
+        state: directory
+        owner: root
+        group: root
+        mode: '0755'
+
+    - name: Override receptor's systemd service runuser
+      ansible.builtin.template:
+        src: templates/systemd_receptor_override.conf.j2
+        dest: "{{ systemd_folder }}/receptor.service.d/override.conf"
+        mode: '0644'
+        owner: root
+        group: root
+      notify:
+        - Restart Receptor
+
 - name: Install dependencies specific to the node type
   ansible.builtin.apt:
     name: "{{ additional_system_packages | default([]) }}"

roles/setup/tasks/variables.yml

@@ -4,6 +4,7 @@
     file: "{{ item }}"
   with_first_found:
     - files:
+        - '{{ ansible_distribution }}-{{ ansible_distribution_version }}.yml'
         - '{{ ansible_os_family }}-{{ ansible_distribution_major_version }}.yml'
         - '{{ ansible_os_family }}.yml'
       paths:

roles/setup/vars/Ubuntu-24.04.yml

@@ -0,0 +1,5 @@
+---
+receptor_packages:
+  - receptor
+  - python3-receptorctl
+systemd_folder: "/usr/lib/systemd/system"