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Rolling restart (#619)

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* implement rolling restart functionality

bouncing each image individually can ensure that a group of docker
containers launched with docker-compose can stay 100% up during deploy.

* move rolling restart into a function

* honor params.Cleanup

Co-authored-by: Simon Aronsson <simme@arcticbit.se>
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Ben Osheroff 2020-08-21 13:35:46 -07:00 • committed by GitHub
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docs/arguments.md
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@ -247,7 +247,18 @@ can be defined, but not both. An example: `--schedule "0 0 4 * * *"`
Environment Variable: WATCHTOWER_SCHEDULE
Type: String
Default: -
```
```
## Rolling restart
Restart one image at time instead of stopping and starting all at once. Useful in conjunction with lifecycle hooks
to implement zero-downtime deploy.
```
Argument: --rolling-restart
Environment Variable: WATCHTOWER_ROLLING_RESTART
Type: Boolean
Default: false
```
## Wait until timeout
Timeout before the container is forcefully stopped. When set, this option will change the default (`10s`) wait time to the given value. An example: `--stop-timeout 30s` will set the timeout to 30 seconds.