Azure VM Image Usage and Demo

# azure ## Demo Here's a demo of this being used: https://asciinema.org/a/euXb9dIeUybE3VkstLWLbvhmp ## Usage This is meant to be an example image that you can copy into your own project and modify to your own needs. Notice that the example image includes a built-in test user account, which by default uses your `~/.ssh/id_ed25519.pub` as an `authorized_key`. Build and upload the image ```shell $ ./upload-image.sh ./examples/basic/image.nix ... + attr=azbasic + nix-build ./examples/basic/image.nix --out-link azure /nix/store/qdpzknpskzw30vba92mb24xzll1dqsmd-azure-image ... 95.5 %, 0 Done, 0 Failed, 1 Pending, 0 Skipped, 1 Total, 2-sec Throughput (Mb/s): 932.9565 ... /subscriptions/aff271ee-e9be-4441-b9bb-42f5af4cbaeb/resourceGroups/nixos-images/providers/Microsoft.Compute/images/azure-image-todo-makethisbetter ``` Take the output, boot an Azure VM: ``` img="/subscriptions/.../..." # use output from last command ./boot-vm.sh "${img}" ... => booted ``` ## Future Work 1. If the user specifies a hard-coded user, then the agent could be removed. Probably has security benefits; definitely has closure-size benefits. (It's likely the VM will need to be booted with a special flag. See: https://github.com/Azure/azure-cli/issues/12775 for details.)

This document provides a demo and instructions for using an example Azure image. It explains how to build and upload the image using provided shell scripts (`upload-image.sh` and `nix-build`), which generates an Azure image ID. This ID is then used to boot an Azure Virtual Machine via `boot-vm.sh`. The example image includes a built-in test user that uses `~/.ssh/id_ed25519.pub` for authentication. Future plans include removing the agent for security and size benefits if a hard-coded user is specified, potentially requiring a special VM boot flag.