How much time will docker wait before showing a health as unhealthy from starting?

[oslon]

Here are the commands that I used for reference:

docker run -dt --name tmp --health-cmd "curl -f http://localhost" busybox sh
docker ps
docker ps
docker ps

After few minutes, docker ps will show "health as unhealthy".

The default healthcheck options are these:

HEALTHCHECK --interval=5s CMD ping -c 1 172.17.0.2
--interval=DURATION(default:30s)
--timeout=DURATION(default:30s)
--start-period=DURATION(default:0s)
--retries=N(default:3)

So, how is the time calculated here? Any idea?