So I've got the IRIS AMI spun up in AWS EC2; it seems to be running fine.  
I've added an EBS volume to it for persistent storage, and now I'm pondering how to make it actually do something useful.  

What's the best way to do deploy code to this instance?  I can think of a few ways to do it, but what's the least painful way?  Push my code to an S3 bucket and figure out how to load it at system start?  Github project?  

I'm probably missing something really basic here -

• I spun up a copy of the Iris community edition AMI.  
• Added Objectscript extension to vscode
• Added objectscript extension pack to vscode
• Added server manager to vscode
• Connected to iris AWS instance using PuTTY
• Changed password
• in vscode, I used server tool to add the server

It seems to connect OK; I can see the %SYS and USER namespaces.  I clicked the "edit code in namespace" button and created a bit of hello world code.  However, when I try to save it, I get "failed to save file 'filename.mac' on the server."
I can connect via a b