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Docker · Directive

HEALTHCHECK

HEALTHCHECK tells Docker how to test whether a container is still working. Docker reports starting, healthy, or unhealthy based on the command result and consecutive failures.

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Syntax

HEALTHCHECK [OPTIONS] CMD command
HEALTHCHECK NONE

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  • Dockerfile
  • CMD
  • Compose service healthcheck
  • docker inspect

Source: Dockerfile reference. Checked 2026-11-03.