Does cloudbee supports rvm out of the box? I had to get rvm working manually to make a job work with ROR project. What about scala support? Do I get to ssh to an instance to access the jenkins workspace and use some kind of cli?
RVM is not installed on the slave but you can install it on the workspace.
For Scala support, it’s the same, you can install a runtime by yourself. It’s usually not required as it’s managed by the build tools. There’s a SBT plugin available. For more information, you can refer to the documentation of DEV@cloud.
For security reasons, SSH access to the server is not allowed. For the CLI, you can use the Jenkins CLI.