Added memcached role

memcached.yml

@@ -0,0 +1,5 @@
+---
+- hosts: memcached
+  become: True
+  roles:
+     - memcached

roles/memcached/files/memcached.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=memcached Container
+After=docker.service
+Requires=docker.service
+ 
+[Service]
+TimeoutStartSec=0
+Restart=always
+ExecStartPre=-/usr/bin/docker stop %n
+ExecStartPre=-/usr/bin/docker rm %n
+ExecStartPre=/usr/bin/docker pull memcached:1.4
+ExecStart=/usr/bin/docker run --name %n -p 11211:11211 -m 1024m memcached:1.4
+ 
+[Install]
+WantedBy=multi-user.target

roles/memcached/tasks/main.yml

@@ -0,0 +1,16 @@
+# Install a docker based mariadb.
+---
+- include: ../common/tasks/docker.yml
+- name: install service file.
+  template:
+    src: files/memcached.service
+    dest: /etc/systemd/system/memcached.service
+    mode: 644
+    owner: root
+    group: root
+- name: install service file
+  command: systemctl daemon-reload
+- name: make sure service is started
+  systemd:
+    name: memcached.service
+    state: started