@Test
  public void testExecute_defaultTarget()
      throws VerificationException, IOException, InterruptedException, DigestException {
    Assert.assertEquals(
        "Hello, world. An argument.\n",
        buildToDockerDaemonAndRun(
            defaultTargetTestProject, "default-target-name:default-target-version"));
  }
Builds and runs jib:buildDocker on a project at {@code projectRoot} pushing to {@code
imageReference}.
jib-maven-plugin/src/integration-test/java/com/google/cloud/tools/jib/maven/BuildDockerMojoIntegrationTest.java