use public dns for system

cloud.yaml

@@ -38,13 +38,8 @@
           enabled: false
           masked: true
         when: ansible_distribution == 'Ubuntu'
-      - name: set resolv.conf
-        become: true
-        copy:
-          content: |
-            nameserver 127.0.0.1
-
-          dest: /etc/resolv.conf
+      - name: resolv
+        include_tasks: ./tasks/resolve.yaml
       - name: iptables-gateways blank
         file:
           name: '{{ansible_user_dir}}/iptables-gateways'

network.yaml

@@ -39,13 +39,8 @@
       - name: Ubuntu netplan
         include_tasks: ./tasks/netplan.yaml
         when: ansible_distribution == 'Ubuntu'
-      - name: set resolv.conf
-        become: true
-        copy:
-          content: |
-            nameserver 127.0.0.1
-
-          dest: /etc/resolv.conf
+      - name: resolv
+        include_tasks: ./tasks/resolve.yaml
       - name: iptables-gateways blank
         file:
           name: '{{ansible_user_dir}}/iptables-gateways'

tasks/resolve.yaml

+- name: set resolv.conf
+  become: true
+  copy:
+    content: |
+      {% for dns in smartdns.china_dns %}
+      nameserver {{dns}}
+      {% endfor %}
+
+    dest: /etc/resolv.conf
+- name: read docker daemon
+  become: true
+  shell: 'cat /etc/docker/daemon.json'
+  register: docker_daemon
+- name: read json
+  set_fact:
+    docker_daemon_config: '{{docker_daemon.stdout | from_json}}'
+- name: add dns config to daemon
+  set_fact:
+    docker_dns_config:
+      dns:
+        - 127.0.0.1
+- name: write docker daemon
+  become: true
+  copy:
+    content: '{{docker_daemon_config | combine(docker_dns_config) | to_nice_json }}'
+    dest: /etc/docker/daemon.json
+  register: docker_write_result
+- name: restart docker for changes
+  become: true
+  systemd:
+    name: docker
+    state: restarted
+  when: docker_write_result.changed