The trains did not in fact run on time.

https://www.snopes.com/fact-check/loco-motive/

https://www.bloomberg.com/news/articles/2016-11-15/stop-saying-mussolini-made-the-trains-run-on-time

Considering it’s tailscale, one may want to have the service fail though as tailscale is sometimes not used for convenience but security concerns instead.

Delay the start of your containers with the tailscale dependency. Are you using required or depends_on in your docker-compose.yml

https://hatchjs.com/docker-compose-conditionally-start-service/

If you’re using kubernetes you can make the requirements at the pod level

https://stackoverflow.com/questions/69423932/container-initialization-order-in-pod-on-k8s

Edit: If using docker-compose.yml you can set a condition on a healthcheck

You can also specify a condition that must be met before the service is started. For example, the following configuration will start the web service only if the db service is healthy:

version: ‘3.7’
services:
web:
image: nginx
depends_on:
– db
condition: service_healthy

The service_healthy condition checks the health of the db service using the docker-compose ps command. If the db service is healthy, the web service will be started.