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also keep the original markdown docs :P~

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Simon Aronsson 2019-06-02 13:18:36 +02:00
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When watchtower detects that a running container needs to be updated it will stop the container by sending it a SIGTERM signal.
If your container should be shutdown with a different signal you can communicate this to watchtower by setting a label named _com.centurylinklabs.watchtower.stop-signal_ with the value of the desired signal.
This label can be coded directly into your image by using the `LABEL` instruction in your Dockerfile:
```docker
LABEL com.centurylinklabs.watchtower.stop-signal="SIGHUP"
```
Or, it can be specified as part of the `docker run` command line:
```bash
docker run -d --label=com.centurylinklabs.watchtower.stop-signal=SIGHUP someimage
```