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document the TZ environment variable

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This adds a description of the "TZ" environment variable to the documentation so users will know it exists and works with Watchtower.  I only learned of this variable by reading the comments on issue #160.
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Germs2004 2020-03-11 22:53:35 -04:00 • committed by GitHub
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@ -37,6 +37,16 @@ Environment Variable: N/A
Default: N/A Default: N/A
``` ```
## Time Zone
Sets the time zone to be used by WatchTower's logs and the optional Cron scheduling argument (--schedule). If this environment variable is not set, Watchtower will use the default time zone: UTC.
```
Argument: N/A
Environment Variable: TZ
Type: String
Default: "UTC"
```
## Cleanup ## Cleanup
Removes old images after updating. When this flag is specified, watchtower will remove the old image after restarting a container with a new image. Use this option to prevent the accumulation of orphaned images on your system as containers are updated. Removes old images after updating. When this flag is specified, watchtower will remove the old image after restarting a container with a new image. Use this option to prevent the accumulation of orphaned images on your system as containers are updated.