Ask HN: Is P2P Docker image sharing a solved problem?

I often make incremental changes to a Docker image on my local machine, and I want to share those updates with my teammate who works in the same company, but remotely. We’d like to avoid using a remote Docker registry (like Docker Hub or a private registry), especially to skip dealing with auth, registry setup, and permissions.

Is there a peer-to-peer or local-only way to do this?

Ideally, I want to:

Expose my image over the local network (or internet if needed).

Let my teammate run a docker pull or equivalent command and fetch my updated image directly.

Avoid needing a full registry setup.

Is there an existing tool, Docker config, or open source project that makes this easy?