standalone.xml.patch

--- template/standalone.xml	2018-09-27 11:31:00.000000000 -0400
+++ standalone.xml	2018-09-27 10:54:09.000000000 -0400
@@ -148,6 +148,27 @@
                         <password>sa</password>
                     </security>
                 </datasource>
+                <datasource jta="true" jndi-name="java:jboss/datasources/MySQLDS" pool-name="MySQLDS" enabled="true" use-ccm="false">
+                    <connection-url>${env.MYSQL_DB_HOST}</connection-url>
+                    <driver-class>com.mysql.cj.jdbc.Driver</driver-class>
+                    <driver>mysql</driver>
+                    <pool>
+                        <min-pool-size>5</min-pool-size>
+                        <max-pool-size>10</max-pool-size>
+                        <prefill>false</prefill>
+                        <use-strict-min>false</use-strict-min>
+                        <flush-strategy>IdleConnections</flush-strategy>
+                    </pool>
+                    <security>
+                        <user-name>${env.MYSQL_DB_USER}</user-name>
+                        <password>${env.MYSQL_DB_PASS}</password>
+                    </security>
+                    <validation>
+                        <valid-connection-checker class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLValidConnectionChecker"/>
+                        <background-validation>true</background-validation>
+                        <exception-sorter class-name="org.jboss.jca.adapters.jdbc.extensions.mysql.MySQLExceptionSorter"/>
+                    </validation>
+                </datasource>
                 <drivers>
                     <driver name="h2" module="com.h2database.h2">
                         <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>