task zcat { File file1 File file2 File file3 File file4 String name String cluster_config String disk_size String docker command <<< cat ${file1} ${file2} ${file3} ${file4} > ${name}.fq.gz >>> runtime { docker: docker cluster: cluster_config systemDisk: "cloud_ssd 40" dataDisk: "cloud_ssd " + disk_size + " /cromwell_root/" } output { File gz = "${name}.fq.gz" } }