change mirror

tasks/docker.yml

 - name: China mirror for Docker
   set_fact:
-    mirror_docker: https://mirrors.ustc.edu.cn/docker-ce
+    mirror_docker: https://mirrors.tuna.tsinghua.edu.cn/docker-ce
   when: "china_mirror"
 - name: Docker 源公钥
   become: true

tasks/utility.yml

@@ -55,10 +55,10 @@
     name: Asia/Shanghai
 - name: set facts for China mirror
   set_fact:
-    mirror_debian: http://mirrors.ustc.edu.cn
-    mirror_debian_security: http://mirrors.ustc.edu.cn
-    mirror_ubuntu: http://mirrors.ustc.edu.cn
-    mirror_ubuntu_security: http://mirrors.ustc.edu.cn
+    mirror_debian: http://mirrors.tuna.tsinghua.edu.cn
+    mirror_debian_security: http://mirrors.tuna.tsinghua.edu.cn
+    mirror_ubuntu: http://mirrors.tuna.tsinghua.edu.cn
+    mirror_ubuntu_security: http://mirrors.tuna.tsinghua.edu.cn
   when: "china_mirror"
 - name: 系统源 (Debian)
   become: true