Throw an exception if the instance public DNS name is missing 
Throw an exception if the instance public DNS name is missing 
nextflow-io/nextflow,robsyme/nextflow,robsyme/nextflow,robsyme/nextflow,robsyme/nextflow,nextflow-io/nextflow,heuermh/nextflow,heuermh/nextflow,nextflow-io/nextflow,heuermh/nextflow,nextflow-io/nextflow,robsyme/nextflow,heuermh/nextflow,nextflow-io/nextflow,heuermh/nextflow