Container Healthcheck
A command Docker runs periodically to determine whether a container is actually working, not just running.
Defined via HEALTHCHECK in a Dockerfile or the healthcheck key in Compose, it lets orchestration restart unhealthy containers and lets dependencies wait until a service is truly ready.
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Docker
A platform for packaging applications and their dependencies into lightweight, portable containers.
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A tool that defines and runs multi-container applications from a single declarative YAML file.
Watchtower
A tool that automatically updates running Docker containers to their latest images.