I am to the point now where I am using the duet with VS Code, git, etc to work on this repo.
I did get the basic hello world docker container running.
For the picture in the Project README.md, I took it with an iPhone (heic). Uploaded it to OneDrive. Downloaded it to the duet. Used a web tool to convert it to webp format. Then used the file browser to move it to the Linux files folder. I should probably add Google Drive to my iPhone so I can shortcut a bit.
Installed the AWS CLI. Verified operation.