Container Security
Multi-Stage Docker Build Security in 2026
Multi-stage builds are the right way to ship secure container images, but the security benefits depend on getting the stage boundaries right. A guide for 2026.
Apr 21, 20267 min read
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
Multi-stage builds are the right way to ship secure container images, but the security benefits depend on getting the stage boundaries right. A guide for 2026.
A pragmatic playbook for migrating an entire engineering organisation onto zero-CVE base images, covering pilot selection, registry mirroring, drift control, and the hard people-side of the rollout.
An end-to-end view of container supply chain controls from source through registry to runtime, covering signing, attestation, admission policy, and runtime drift, with concrete checkpoints at each stage.
What it actually takes to put Kubernetes admission policy into enforcement mode without breaking deployments: phased rollout, exception workflows, audit-mode hygiene, and policy authoring conventions that survive contact with engineers.
A concrete hardening checklist for container registries in 2026, covering authentication, signing, scanning, retention, and the operational details that actually matter.
BuildKit has been the default Docker builder for years, but its security features remain underused. Here are the practices that matter in 2026.
How to validate supply chain attestations at pod admission time without grinding deployments to a halt: which attestation types actually matter, how to chain verifications, and how to fail useful.
A program plan for getting OCI artifact signing across an organisation: trust roots, key custody, build integrations, registry policy, and the inevitable cleanup of unsigned legacy content.
Runtime drift is the last honest witness in container supply chain defence. This post covers what drift signals tell you, how to instrument for them, and how to investigate without overwhelming on-call.
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