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Pre-update lifecycle hook (#793)

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* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code
#649

* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code
#649

* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code
#649

* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code
#649

* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code #649

* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code #649

* Make watchtower skip update if pre-update lifecycle hook exits with a non-zero exit code #649

* Prevent starting new container if old one is not stopped because of lifecycle hook.

* Add null check for c.containerInfo.State in IsRunning

* Fixed that the container would not start

* Added test for preupdate

* EX_TEMPFAIL -> ExTempFail

* Added missing fuction ouput names

* Skip preupdate when container is restarting.
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yrien30 2021-06-24 00:36:33 +02:00 • committed by GitHub
parent dc12a1ac7f
commit 145fe6dbcb
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5
docs/lifecycle-hooks.md
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@ -4,6 +4,9 @@
These are shell commands executed with `sh`, and therefore require the container to provide the `sh`
executable.
> **DO NOTE**: If the container is not running then lifecycle hooks can not run and therefore
> the update is executed without running any lifecycle hooks.
It is possible to execute _pre/post\-check_ and _pre/post\-update_ commands
**inside** every container updated by watchtower.
@ -63,5 +66,5 @@ If the label value is explicitly set to `0`, the timeout will be disabled.
### Execution failure
The failure of a command to execute, identified by an exit code different than
0, will not prevent watchtower from updating the container. Only an error
0 or 75 (EX_TEMPFAIL), will not prevent watchtower from updating the container. Only an error
log statement containing the exit code will be reported.