Snyk for Docker and Container Images: Practical Guide

Why container security matters for every Docker user Container images are one of the largest and most overlooked attack surfaces in modern software. A typical Node.js application image based on the default node:20 tag ships with over 800 installed OS packages, many of which carry known vulnerabilities that have nothing to do with your application code. The base image alone - before you install a single dependency - can contain dozens of high and critical CVEs. The problem compounds as images move through the pipeline. Developers build images locally, push them to a registry, pull them in CI, deploy them to staging, and eventually run them in production. At no point in this chain does Docker itself verify that the packages inside the image are free of known security issues. That responsibility falls on the team, and without a dedicated scanning tool, most teams have no visibility into what their containers actually contain. Snyk Container is the container security component of the Snyk