Feature Request: Plugins should be able to leverage secrets
@thaJeztah describes the best practices for secrets in issue #13490. The current implementation of secrets requires swarm and the use of a service. This pattern would be useful for Plugins, which are inherently insecure today. The 'docker plugin inspect' command shows Args and Env values which are commonly used to pass credentials. In addition, these credentials are not encrypted at rest.

This request is to allow the container providing a Plugin to have access to a named Docker secret.