`ttl.sh`: Anonymous & ephemeral Docker registry

> Many workflows in CI will build an image, and then subsequent steps will test > that image in parallel. Docker registries are a commonly used storage > mechanism for these intermediate build artifacts. One build step can push an > image, and other distributed steps can pull. The challenge is that most > registries require authentication to push and pull. A workflow can either > bake credentials in and share them to build workers, or require forked builds > to bring their own registry credentials. The first is insecure, the second > creates friction for new contributors. > > ttl.sh solves this by making an ephemeral and anonymous registry. [ttl.sh](https://ttl.sh)