v1.8.7 - DockTail Cloud connects right away

DockTail now connects to DockTail Cloud as soon as it starts, instead of first waiting for the Tailscale socket. When tailscaled is still booting (a sidecar behind a plain depends_on, a host that is starting up), the agent shows up in Cloud right away and reports what it is waiting on. Shutdown during startup is also cleaner: a stop signal now interrupts the socket wait and the Docker event retry delay immediately, and background workers are stopped before the Docker client closes. No Compose changes are required.

What's Changed

• Connect DockTail Cloud before waiting for Tailscale by @marvinvr in #125

Full Changelog: 1.8.6...1.8.7