feat: end-to-end working runtime with embedded dependencies - #4
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Single binary that boots containerd in-process, provisions ephemeral containers, and runs GitHub Actions jobs to completion. Embedding: - Embed containerd-shim-runc-v2 and runc, extracted next to binary on startup - Embed CNI plugins (bridge, host-local, portmap), extracted to data dir - Register containerd builtin plugins via blank import Runtime: - Default to ghcr.io/actions/actions-runner:latest (runner pre-installed) - Custom images via EPHEMERD_IMAGE get embedded runner mounted in - Per-job hardlink copy of runner dir for concurrent write safety - Serialize image pulls with mutex to avoid content store contention Networking: - Custom EPHEMERD-FORWARD iptables chain (avoids CNI/Netavark conflicts) - Auto-detect host MTU for bridge (fixes WSL2 1420 MTU) - Configurable subnet via [network] subnet in TOML (default 10.89.0.0/16) - Generate resolv.conf with public DNS, filtering unreachable private IPs - DNS (port 53) allowed through firewall before private range deny rules GitHub integration: - Replace hand-rolled YAML parser with proper yaml.Unmarshal - Add debug logging to poll loop for visibility - Use gopkg.in/yaml.v3 (already an indirect dep) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
go:embed directives need the shim, runner, and CNI binaries present even for go vet and golangci-lint. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
…age) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
ghcr.io/actions/actions-runner:latest— no image config needed for Linux jobs[network] subnetin TOML configyaml.Unmarshalfor EPHEMERD_IMAGE lookupTest plan
test-runner.ymlviaworkflow_dispatch🤖 Generated with Claude Code