Implement naive update for Synology packages, using latest versions from
pkgs.tailscale.com. This is naive because we completely trust
pkgs.tailscale.com to give us a safe package. We should switch this to
some better signing mechanism later.
I've only tested this on one DS218 box, so all the CPU architecture
munging is purely based on docs.
Updates #6995
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Extract the self-update logic from cmd/tailscale/cli into a standalone
package that could be used from tailscaled later.
Updates #6995
Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
Andrew Lytvynov