feat(bootstrap): use configurable mirror and write proper sources.list

roles/bootstrap/tasks/ubuntu.yml

@@ -30,15 +30,24 @@
         --keyring=/usr/share/keyrings/ubuntu-archive-keyring.gpg
         --include={{ bootstrap_ubuntu_base_csv }}
         {{ bootstrap_ubuntu_release }} /mnt
-        https://archive.ubuntu.com/ubuntu/
+        {{ system_cfg.mirror }}
       register: bootstrap_ubuntu_base_result
       changed_when: bootstrap_ubuntu_base_result.rc == 0
 
-    - name: Enable universe repository
-      ansible.builtin.replace:
-        path: /mnt/etc/apt/sources.list
-        regexp: '^(deb\s+\S+\s+\S+\s+main)$'
-        replace: '\1 universe'
+    - name: Write bootstrap sources.list
+      ansible.builtin.template:
+        src: ubuntu.sources.list.j2
+        dest: /mnt/etc/apt/sources.list
+        mode: "0644"
+
+    - name: Configure apt performance tuning
+      ansible.builtin.copy:
+        dest: /mnt/etc/apt/apt.conf.d/99performance
+        content: |
+          Acquire::Retries "3";
+          Acquire::http::Pipeline-Depth "10";
+          APT::Install-Recommends "false";
+        mode: "0644"
 
     - name: Update package lists
       ansible.builtin.command: "{{ chroot_command }} apt update"