Container Update Report

Update container digests and deploy affected NixOS hosts end-to-end.

Workflow

1. Update Container Digests

Run the update command to fetch latest container SHAs:

just update-container-digests

This updates apps/fetcher/containers-sha.nix with the latest digests from all registries.

2. Check What Changed

Check the diff to see which containers have updates:

git diff apps/fetcher/containers-sha.nix

Summarize changes in a table format:

• Registry (docker.io, ghcr.io, lscr.io, etc.)
• Container name and tag
• Note: If no changes, inform user that all containers are up to date

3. Map Containers to Hosts

Search for container usage in .nix files:

# Search for specific container
grep -r "container-name" --include="*.nix" .

Key locations:

• apps/*.nix - Application definitions
• modules/nixos/host/*/ - Host-specific configurations

See container-host-mapping.md for known mappings.

4. Deploy Affected Hosts

Ask user which hosts to deploy, then deploy each:

just colmena <hostname>

Run deployments in parallel when hosts are independent. Verify success by checking output shows "Activation successful" and "All done!".

5. Report Summary

After deployment, provide a summary table:

Common Container Locations

Resources

See references/container-host-mapping.md for detailed container-to-host mappings.