running: state that we build on debian unstable
running: state that we build on debian unstable

Fixes Cockpit issue 4556
Closes #47
Reviewed-by: Stef Walter <8a7fbf0f15d3ad982af54ef28f5c117d2494b76c@redhat.com>

cockpit-project/cockpit-project.github.io,martinpitt/cockpit-project.github.io,cockpit-project/cockpit-project.github.io,cockpit-project/cockpit-project.github.io,martinpitt/cockpit-project.github.io,martinpitt/cockpit-project.github.io,cockpit-project/cockpit-project.github.io,martinpitt/cockpit-project.github.io