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update Readme.md for execEnvs 

Signed-off-by: yxxhero <aiopsclub@163.com>
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yxxhero 2022-05-14 10:13:09 +08:00
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@ -1126,6 +1126,16 @@ mysetting: |
The possibility is endless. Try importing values from your golang app, bash script, jsonnet, or anything!
Then `execEnvs` same as `exec`, but it can receive a dict as the envs.
A usual usage of `execEnvs` would look like this:
```yaml
mysetting: |
{{ execEnvs (dict "envkey" "envValue") "./mycmd" (list "arg1" "arg2" "--flag1") | indent 2 }}
```
## Hooks
A Helmfile hook is a per-release extension point that is composed of: