0ed9bacd

Add NixCI deployment to Fly.io

Configure NixCI to run the Fly deployment package for the default branch.
The deploy package builds the app image with Nix, pushes it to Fly's registry with skopeo, and deploys the pushed image with flyctl so CI does not need Docker or a Fly remote builder.

Testing:
- nix fmt flake.nix nix-ci.nix
- nix flake check
- ./dev-scripts/git-hooks/pre-commit
- nix build .#deploy-to-fly
- nix eval --file nix-ci.nix deploy.fly.package

Agent Instructions

Each run corresponds to one flake attribute. Click a run for its logs and status.

Example: https://nix-ci.com/cb:mtlynch:grosiree/deploy-nix-ci/0ed9bacdd282883421de26be272ebf9a6ee422fc/4f9246f3-71e4-430a-b1c9-4aaa6185928a

Wait for suite to complete:

curl --netrc -N https://nix-ci.com/cb:mtlynch:grosiree/deploy-nix-ci/0ed9bacdd282883421de26be272ebf9a6ee422fc/wait

This page is also available in machine-friendly formats. Request one with the Accept header:

• curl --netrc -H 'Accept: application/json' https://nix-ci.com/cb:mtlynch:grosiree/deploy-nix-ci/0ed9bacdd282883421de26be272ebf9a6ee422fc
• curl --netrc -H 'Accept: text/markdown' https://nix-ci.com/cb:mtlynch:grosiree/deploy-nix-ci/0ed9bacdd282883421de26be272ebf9a6ee422fc

For more instructions, fetch https://nix-ci.com/instructions .