BuildKit vs Inclavare Containers

BuildKit is a free toolkit for turning source code into build artifacts. It consists of the buildkitd daemon and buildctl client, and uses LLB, a binary format for describing process dependency graphs. Builds can use Dockerfiles or other LLB-compatible frontends, resolve dependencies concurrently, cache instructions, import and export caches, run nested jobs, and collect unused data automatically. BuildKit supports execution without root privileges and OCI (runc) or containerd workers. Results can be exported as images, local directories, tarballs, Docker tarballs, or OCI tarballs. Cache options include inline, registry, local-directory, and GitHub Actions backends; the README marks GitHub Actions, S3, and Azure Blob options experimental. The daemon provides a gRPC API over a Unix socket by default, with TCP sockets also supported. Binaries are available for Linux, macOS, and Windows. The unofficial Homebrew formula for macOS omits buildkitd; the project gives Lima in a Linux virtual machine as one way to run it. BuildKit is licensed under Apache-2.0.

Inclavare Containers is a free, open-source Linux container runtime for launching protected containers in hardware-assisted Trusted Execution Environments. It creates hardware-enforced isolation between a tenant workload and privileged cloud-provider software. Its Enclave Attestation Architecture provides remote attestation that sensitive workloads run on trusted TEE hardware. The rune component is described as compliant with the OCI Runtime specification, while documented integrations include dockerd, containerd, and pouchd. Deployment can use Occlum LibOS or WebAssembly Micro Runtime, and Rats-TLS provides an attested secured channel between heterogeneous TEEs. shim-rune handles enclave signing and management between containerd and rune; epm manages cache pools for enclave startup. The project is cloud-platform agnostic and can run on public-cloud Kubernetes platforms. It supports Kubernetes CRI, uses the OCI image format, and documents Linux hosts including Ubuntu 18.04 and Alibaba Linux 2. Installation is described through source builds or RPM/DEB repositories.