83c722b3

Author: Michael Lynch <git@mtlynch.io>

Committer: Michael Lynch <mtlynch@noreply.codeberg.org>

Deploy to Fly.io with a Nix-built image instead of a Dockerfile (#254)

Build the OCI image with dockerTools.streamLayeredImage (no Docker
daemon, so it works in the NixCI sandbox) and deploy it via a
deploy-to-fly package that pushes to registry.fly.io with skopeo and
runs `fly deploy --image`. The same package drives both NixCI
auto-deploys on master (nix-ci.nix) and manual `nix run .#deploy-to-fly`.

The image adds CA certificates, which the old Alpine image omitted, so
the app's HTTPS calls to S3 and SMTP have trust roots.

Remove the Dockerfile and the now-unused serve-docker and
enable-multiarch-docker scripts.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Reviewed-on: https://codeberg.org/mtlynch/little-moments/pulls/254

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