Docker Health Checks are used to monitor the health of running containers and ensure that the services inside the container are operating as expected.Docker health checks help ensure that your containerized services are available and responsive.Health checks are specified in the Dockerfile using the HEALTHCHECK instruction using the basic syntax.Health checks can be integrated with monitoring systems to generate alerts if a service is unhealthy.After setting up health checks, you can query the health status of your container using the docker ps command.You can also define health checks in a docker-compose.yml file for services running as part of a multi-container application.Docker does not automatically restart a container that becomes unhealthy.Choose meaningful health checks to test the actual functionality of your application.Health checks should monitor the application inside the container, not external dependencies.Docker Health Checks provide a vital mechanism for ensuring that the containers in your application are running as expected.