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CNCF container runtime

Container infrastructure is restricted to CNCF-hosted projects. Appearance in the broader CNCF Landscape or Linux Foundation membership alone is insufficient.

Project Role
Lima Explicitly started Linux VM on macOS
k3s / Kubernetes Shared local service orchestration
containerd Sole running container runtime, managed by k3s
SPIRE Real workload identity and trust bundles
Podman Container Tools Buildah builds OCI images locally; Skopeo supports image inspection

The default is the shared Kubernetes security lab, with three security repositories and no ECS services. The lab requires mcp-spiffe-bridge, which is not yet published; the quickstart offline path does not. The driver reads the existing service inventory and creates native Kubernetes objects. It uses neither Docker nor a Compose provider. The historically named OCI build files and image registries do not select a container runtime.

make up           # 2 CPU, 4 GiB VM, local image builds, all lab services
make down         # lab-owned namespaces, RBAC and socket only
make runtime-stop # only when no sibling project needs the shared VM

For the full fresh integration check, use make demo instead of make up. First launch needs free disk for the pinned Debian image, k3s, build dependencies and container images. The 12 GiB sparse VM disk and caches can consume additional host disk. Startup is explicit and no login service is installed. Application images are referred to by digest after local import into containerd.

Only the three security repositories are mounted, read-only. Home directories, SSH agents and public SSH keys are not shared. The kubeconfig remains inside the VM. Automatic host port forwarding is disabled. Every driver operation targets its loopback Kubernetes API and validates ownership before destructive work.

One active runtime

The Podman compatibility commands and runtime configuration were retired on 2026-10-13. Historical reports remain dated evidence. Existing legacy VMs are not stopped or deleted by this migration. OCI Containerfiles and docker.io registry references remain valid image formats and locations, not Docker runtime dependencies.

Integration build staging belongs to the FHIR repository's ignored runtime data, not the clean-room authorization repository. Only explicit public build inputs are staged; no Git history, task databases or credentials are copied.

Portfolio convention

Project Local execution Container path
mcp-svid-auth Python checks and CLI Shared Lima/k3s/containerd lab
mcp-spiffe-bridge (not yet published) Node.js library and TLS demo Embedded in the shared FHIR gateway
hipaa-fhir-mcp Node.js stdio and Desktop bundle Shared FHIR namespace
it-grc (not yet public) Python standard-library bridge and CLI CISO Assistant CE on k3s in its own it-grc Lima VM
ecs-contract Independent Python CLI and AWS ECS Separate ecs-contract Lima/containerd VM
engineering-os Node.js retrieval and dashboard, local Beads No container required

Host-native workflows stay host-native. ECS Contract has its own VM and lifecycle, with no Kubernetes or security-lab dependency. IT GRC also has its own VM and lifecycle; it reads a saved lab demo report and does not use the security-lab VM. All local application containers use containerd; no Docker or Podman daemon is required. ECS remains an AWS deployment target rather than being replaced by Kubernetes. Every teardown targets only resources owned by its project or run.