Describe the bug
The JSON object passed into .dockerconfigjson in the documentation is invalid, it contains a trailing , where it shouldn't.

To Reproduce
Steps to reproduce the behavior:
Follow the guide, you'll get an error similar to this:

"error": "Secret "azurecr-credentials" is invalid: data[.dockerconfigjson]: Invalid value: \"<secret contents redacted>\": invalid character '}' looking for beginning of object key string"

Expected behavior
There should be no errors.