I suggest that using the package docker-compose-plugin would be easier than manual installing and will follow the latest standards that Docker is using with Docker Compose as a plugin. The example in the book would need to be change to remove the - but I think the execution would otherwise be the same. As of this writing the compose plug-in is v2.21.0 from the apt package. (In fact it was already installed. I assume from installing docker-ce on my PI using Docker’s instructions.)
Docker’s docker instructions
Docker’s compose instructions
Thanks for the really helpful, time saving suggestion Jacob! We may consider revising the installation instructions in the book to reflect your more approachable recommendation. Thanks again!