Running a Concourse-Task with an registry-image resource

Question

I am using Concourse-CI in combination with a private Docker registry and everything works fine. However, I want to run a task as an image I provide via the registry. To clarify: I don't want to run the image within the task, the task source should be my image. Unfortunately I wasn't able to find an example on here or on the Concourse-CI docs.

My resource:

resources:
- name: my-image
  type: registry-image
  source:
    repository: ((registry-url))/my-image
    username: ...
    password: ...
    ca_certs:
    - ((registry-cert))

So, if I'm correct, the task/config/source cannot take a resource but an anonymous-resource where I would provide a docker.io link.

I am very appreciative for some help. :)

Edit: OK, so my first mistake was to only look at the Task schema, I can configure an image (https://concourse-ci.org/jobs.html#schema.step.task-step.image) but when I do:

- task: test
  image: my-image
  config:
    platform: linux
    inputs:
    run:
      ...

I get this error: find or create container on worker 4c38517c9713: no image plugin configured.

Answer 1

Ok, so the answer was to make the image privileged for some reason...