gistfile1.txt

                <datasource jndi-name="java:jboss/datasources/UnifiedPushDS" enabled="true" use-java-context="true" pool-name="UnifiedPushDS">
                    <connection-url>jdbc:postgresql://${env.POSTGRES_SERVICE_HOST}:${env.POSTGRES_SERVICE_PORT}/${env.POSTGRES_DATABASE}</connection-url>
                    <driver>postgresql</driver>
                    <security>
                      <user-name>${env.POSTGRES_USER}</user-name>
                      <password>${env.POSTGRES_PASSWORD}</password>
                    </security>
                    <validation>
                        <check-valid-connection-sql>SELECT 1</check-valid-connection-sql>
                        <background-validation>true</background-validation>
                    </validation>
                    <pool>
                        <flush-strategy>IdleConnections</flush-strategy>
                    </pool>
                </datasource>
                <drivers>
                    <driver name="h2" module="com.h2database.h2">
                        <xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
                     </driver>
                     <driver name="postgresql" module="org.postgresql">
                        <xa-datasource-class>org.postgresql.xa.PGXADataSource</xa-datasource-class>
	                </driver>
                </drivers>