v0.10.0

• Remove support for Ignition v0.35.0 (Ignition spec v2.x)
• Remove support for Container Linux Configs (action required)
  • Container Linux Configs were a YAML format that rendered to Ignition (spec v2.x)
  • Flatcar Linux now supports Ignition v2 (spec v3.x)
  • Butane is a suitable YAML format that renders Ignition v2 (spec v3.x)
• Upgrade Ignition from v0.35.0 (spec v2.x) to v2.14.0 (spec v3.x)
• Update Go version (v1.20.2) and alpine base image (v3.17.3)
• Add limited support for Matchbox rendering Butane configs (#997) (docs)
• Recommend writing Butane via external tools (action required)
  • For Terraform, use poseidon/terraform-provider-ct
  • For a CLI, use butane
• Parse Ignition and render forward to Ignition v2 (spec v3.3)
  • Ignition is forward compatible (e.g. a v3.1 spec can be rendered as v3.3 safely)

If you still template Container Linux Configs via Matchbox, migrate to Butane by prepending:

variant: flatcar
version: 1.0.0