Deploying an image from a public container registry

[mjc-gh]

I'm building an open-source Rails application and I'm planning on making Kamal the default way to deploy the app. I'm curious if there are plans to support public Docker images so that deploying users do not need to log in to the Docker registry, whether that's Docker Hub or GHCR.

Ideally, my end users can just install Kamal and use an explicit --config-file with --skip-push to deploy the app:

kamal deploy --config-file config.yml --skip-push --version v0.0.1

With the config file containing something like:

service: tiny_pixel
image: ghcr.io/mjc-gh/tiny_pixel
servers:
  web:
    hosts:
      - 1.2.3.4
  workers:
    hosts:
      - 1.2.3.4
    cmd: ./bin/jobs
registry:
  server: ghcr.io
  public: true