Pulling multiple privates image in the same registry using image_pull_secrets

Suppose that there is a private registry whose domain name is my-registry.private.
And there are 3 projects in the registry; “library”, “dev”, “security”.

“library” project can be publicly accessed by anonymous.
“dev” and “security” are totally separated to access, which means each project has each account to login.

And so I created two docker config files for “dev”, “security” referencing the following document, https://docs.drone.io/pipeline/kubernetes/syntax/images/#pulling-private-images.

It seems like that the first docker credential in image_pull_secrets is used in the same repository according to the following code. Can I specify a docker credential to pull image in step?

	for _, step := range spec.Steps {
	STEPS:
		for _, cred := range creds {
			if image.MatchHostname(step.Image, cred.Address) {
				step.Auth = &engine.Auth{
					Address:  cred.Address,
					Username: cred.Username,
					Password: cred.Password,
				}
				break STEPS
			}
		}
	}

My .drone.yml file is in below.

drone.yml

---
kind: pipeline
type: docker
name: default

clone:
  disable: true

steps:
- name: clone
  image: drone/git

- name: code test
  image: my-registry.private/dev/golang
  commands:
  - go test

- name: security test
  image: my-registry.private/security/scan
  commands:
  - scan all

- name: build/push
  image: my-registry.private/library/drone-plugin-docker
  privileged: true
  settings:
    registry: my-registry.private
    username:
      from_secret: docker_username
    password:
      from_secret: docker_password
    repo: my-registry.private/dev/app
    tags: latest
    dockerfile: Dockerfile

image_pull_secrets:
- dockerconfig_security
- dockerconfig_dev