memoapp2-ds.xml

<?xml version="1.0" encoding="UTF-8"?>
<datasources>
 <datasource
  jndi-name="jdbc/memoapp_db"
  pool-name="memoapp_db"
 >
  <connection-url>jdbc:mysql://memoapp-db:3306/memoapp_db</connection-url>
  <driver>mysql</driver>
  <security>
   <user-name>memoapp</user-name>
   <password>memoapp</password>
  </security>

 </datasource>
 <drivers>
  <driver
   name="mysql"
   module="com.mysql"
  >
   <driver-class>com.mysql.cj.jdbc.Driver</driver-class>
  </driver>
 </drivers>
</datasources>