This is the Git repo of the Docker "Official Image" for cassandra (not to be confused with any official cassandra image provided by cassandra upstream). See the Docker Hub page for the full readme on how to use this Docker image and for information regarding contributing and issues.
The full image description on Docker Hub is generated/maintained over in the docker-library/docs repository, specifically in the cassandra directory.
For more information about the full official images change lifecycle, see the "An image's source changed in Git, now what?" FAQ entry.
For outstanding cassandra image PRs, check PRs with the "library/cassandra" label on the official-images repository. For the current "source of truth" for cassandra, see the library/cassandra file in the official-images repository.