To help solve this issue
```
apk:
signature:
key_file: "{{ .Env.ABUILD_KEY_NAME }}.rsa"
key_name: "{{ .Env.ABUILD_KEY_NAME }}"
```
<!--
Hi, thanks for contributing!
Please make sure you read our CONTRIBUTING guide.
Also, add tests and the respective documentation changes as well.
-->
<!-- If applied, this commit will... -->
Allow that the key_name in apk signature to be templated
<!-- Why is this change being made? -->
The name of the key might not be hardcoded, in a github workflow
<!-- # Provide links to any relevant tickets, URLs or other resources
-->
...
1b7dd258ce