How can you check the health of a running Docker container?

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To assess the health of a running Docker container effectively, defining a health check within the Dockerfile or using the 'docker inspect' command provides valuable insights into the container's operational status. Health checks are configured to run specific commands at specified intervals, allowing Docker to determine a container's health based on its responsiveness or output. This means that if a container becomes unresponsive or fails to meet the defined criteria, Docker can mark the container as unhealthy.

When you use the 'docker inspect' command, you can retrieve detailed information about a container, including its health status if a health check is defined. This dynamic assessment enables automated monitoring and recovery strategies, ensuring that issues are detected promptly, and the container can be restarted or replaced if needed.

The other options do not provide a direct measurement of a container's health. While the 'docker ps' command can show whether a container is running or stopped, it does not give insights into the container's operational health. Checking logs manually may provide some information, but it requires additional effort and does not systematically indicate health status. Running a network diagnostic may assist in troubleshooting, but again, it is not a definitive approach to checking container health specifically.

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