Guides · Engineering

Container Image Hardening Basics

Harden container images

This guide explains building safer container images: minimal bases, pinned package versions, multi-stage builds, non-root users, and regular CVE scanning.

containers
image hardening
cve scanning
non-root
docker

Start minimal

Use slim or distroless bases and remove build tools in final images.

Pin and verify

Pin package versions and verify checksums for downloads.

Run as non-root

Set a non-root user and limit capabilities; avoid privileged containers.

Scan and update

Scan images for CVEs regularly and rebuild when fixes land.

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