containers: Update ws-container* make rules
containers: Update ws-container* make rules

Drop calling make-rpms call, it's annoying when you are working on the
container definition. If there are any existing rpms from a previous
make-rpms call, use them and copy them into the container, otherwise use
the distro packages.

Also move to podman, none of our developers use docker any more.

cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit,mvollmer/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit,mvollmer/cockpit,martinpitt/cockpit,martinpitt/cockpit,cockpit-project/cockpit,mvollmer/cockpit,martinpitt/cockpit