+# Your temporary directory should have the size of all layers of the biggest image in the cluster, this is hard to estimate, but you can start with five times that size. You can set up a different directory by using the @--tempdir@ switch. Make sure that the user running the docker daemon has permissions to write in that directory.
+# Run @arv-migrate-docker19 --dry-run@ from the Arvados Python SDK on the host (not in a container). This will print out some information useful for the migration.
+# Finally to make the migration run @arv-migrate-docker19@ from the Arvados Python SDK on the host (not in a container).