Yes, you can build and host your own Mac base images directly using the lume CLI. See the usage guide at: https://github.com/trycua/cua/tree/main/libs/lume#usage

Currently, lume supports pushing to GitHub Container Registry (GHCR). However, it’s feasible to extend support to any OCI-compatible registry in the future.

Steps to build and push a custom image:

1. Start by creating a new VM or pulling an existing image. Launch the VM, make your desired modifications, and use it as your golden image.

2. Generate a classic access token on GitHub. Then: export GITHUB_USERNAME=<your_github_username> export GITHUB_TOKEN=<your_github_token>

3. Push your custom image: lume push "<VM_NAME_TO_PUSH>" "<IMAGE_NAME>:<TAG>" --registry ghcr.io --organization "<your_org_id>" --additional-tags "<optional_additional_tags>"

Example: lume push "lume_vm" "macos-sequoia-cua:latest" --registry ghcr.io --organization "trycua" --additional-tags "15.2"

Pull your image later with: lume pull "macos-sequoia-cua:latest" --registry ghcr.io --organization "trycua"

There is no mandatory dependency on the Cua-hosted registry - you are free to maintain your own image registry using GHCR or another OCI-compatible alternative (with some extension work).