Run Soapui project from maven

It's possible. Under configuration tag you can specify testCase or testSuite. From the test-automation page for maven on soapui docs.

testSuite : Specifies the name of the TestSuite to run
testCase : Specifies the name of the TestCase to run

I usually bind a property to specify which testcase/testsuite i want to run at the commandline. 

<testCase>${soapui.testcase}</testCase>

and bind the property soapui.testcase at top of pom file under project tag to an empty string like this.

<project>
   ...
   <properties>
      <soapui.testcase></soapui.testcase>
      <soapui.testsuite></soapui.testsuite>
   </properties>
   ...
</project>

That way, by default, all tests are run. And if i want to run something in particular i can do the following. 

#Just run My TestCase
mvn clean install -Dsoapui.testcase="My TestCase"

#Just run My TestSuite
mvn clean install -Dsoapui.testsuite="My TestSuite"

#run everything
mvn clean install 

Hope it helps!