add migrate script

ansible/migrate-to-docker.yaml

+---
+- hosts: dns-in-docker
+  tasks:
+    - name: read dnsmasq.conf
+      become: true
+      shell: cat /etc/dnsmasq.conf || true
+      register: dnsmasq_conf_result
+    - name: read dnsmasq.d/dhcp.conf
+      become: true
+      shell: cat /etc/dnsmasq.d/dhcp.conf || true
+      register: dnsmasq_dhcp_result
+    - name: read old docker-compose file
+      become: '{{become_in_rsync}}'
+      shell: 'cat {{ansible_user_dir}}/router/docker-compose.yml || true'
+      register: docker_compose_result
+    - name: make a backup
+      shell: 'cp -rf {{ansible_user_dir}}/router {{ansible_user_dir}}/router-backup'
+    - name: dnsmasq.conf
+      become: true
+      copy:
+        content: '{{ dnsmasq_conf_result.stdout }}'
+        dest: '{{ansible_user_dir}}/router/dnsmasq.conf'
+        owner: '{{ ansible_user_id }}'
+        group: '{{ ansible_user_id }}'
+    - name: copy dnsmasq.d here
+      become: true
+      shell: 'cp -rf /etc/dnsmasq.d {{ansible_user_dir}}/router/dnsmasq.d || true'
+    - name: dnsmasq.d permission
+      become: true
+      file:
+        path: '{{ansible_user_dir}}/router/dnsmasq.d'
+        state: directory
+        recurse: true
+        owner: '{{ ansible_user_id }}'
+        group: '{{ ansible_user_id }}'
+    - name: remove libvirt-daemon
+      become: true
+      file:
+        path: '{{ansible_user_dir}}/router/dnsmasq.d/libvirt-daemon'
+        state: absent
+    - name: docker-compose file
+      become: true
+      copy:
+        content: |
+          {{docker_compose_result.stdout}}
+            dnsmasq:
+              restart: always
+              image: git-registry.mycard.moe/nanahira/dnsmasq:latest
+              network_mode: host
+              cap_add:
+                - NET_ADMIN
+              volumes:
+                - './dnsmasq.conf:/etc/dnsmasq.conf:ro'
+                - './dnsmasq.d:/etc/dnsmasq.d:ro'
+                - '/var/lib/misc:/var/lib/misc'
+        dest: '{{ansible_user_dir}}/router/docker-compose.yml'
+        owner: '{{ ansible_user_id }}'
+        group: '{{ ansible_user_id }}'
+    - name: pull image
+      become: true
+      docker_image:
+        name: git-registry.mycard.moe/nanahira/dnsmasq:latest
+        source: pull
+    - name: disable dnsmasq systemd
+      become: true
+      systemd:
+        name: dnsmasq
+        state: stopped
+        enabled: 
+    - name: docker-compose up -d
+      docker_compose:
+        project_src: '{{ansible_user_dir}}/router'
+        services:
+          - dnsmasq