Add R containerit

README.md

@@ -180,7 +180,7 @@ Cloud Run is on [Stackshare](https://stackshare.io/google-cloud-run) and [StackO
 * [Google Cloud Build](https://cloud.google.com/cloud-build/): pay-per-use cloud-based docker and custom builds
 * [Buildpacks](https://buildpacks.io/): `pack build` to transform apps in popular languages to container images.
 * Java [Jib](https://github.com/GoogleContainerTools/jib): Build container images for your Java applications.
-
+* R [containerit](https://o2r.info/containerit/): Package R script/session/workspace and all dependencies as a Docker container.
 ### Guides
 
 * [Dockerfile Best Practices](https://blog.docker.com/2019/07/intro-guide-to-dockerfile-best-practices/)