func parseFlags(prog string, args []string, stderr io.Writer) (_ opts, ok bool, exitCode int) {
opts := opts{
SourceDir: ".",
- TargetOS: "debian:10",
+ TargetOS: "debian:11",
Maintainer: "Arvados Package Maintainers <packaging@arvados.org>",
Vendor: "The Arvados Project",
}