Question

Can we invoke ant file for pipeline in jenkins using a Jenkinsfile

Answer 1

Yes, you can do it.

You need to specify the following in the jenkinsfile.

def antVersion = 'Ant1.9.1'
withEnv( ["ANT_HOME=${tool antVersion}"] ) {
    sh '$ANT_HOME/bin/ant target1 target2'
}

Hope this helps!