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Linked containers
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< h1 > Linked containers< / h1 >
< p > Watchtower will detect if there are links between any of the running containers and ensures that things are stopped/started in a way that won't break any of the links. If an update is detected for one of the dependencies in a group of linked containers, watchtower will stop and start all of the containers in the correct order so that the application comes back up correctly.< / p >
< p > For example, imagine you were running a < em > mysql< / em > container and a < em > wordpress< / em > container which had been linked to the < em > mysql< / em > container. If watchtower were to detect that the < em > mysql< / em > container required an update, it would first shut down the linked < em > wordpress< / em > container followed by the < em > mysql< / em > container. When restarting the containers it would handle < em > mysql< / em > first and then < em > wordpress< / em > to ensure that the link continued to work.< / p >
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