feat(minio): add ansible role for deploying minio, a s3-compatible object storage server, with docker

README.md

@@ -11,6 +11,9 @@ concise area of concern.
 - [`roles/restic-s3`](roles/restic-s3/README.md): Manage backups using restic
   and persist them to an s3-compatible backend.
 
+- [`roles/minio`](roles/minio/README.md): Deploy [min.io](https://min.io), an
+  s3-compatible object storage server, using docker containers.
+
 ## License
 
 [CNPLv7+](LICENSE.md): Cooperative Nonviolent Public License