Dockerfile Best Practices#

A Dockerfile is a security boundary. Every decision – base image, installed package, file copied in, user the process runs as – determines the attack surface of your running container. Most Dockerfiles in the wild are bloated, run as root, and ship debug tools an attacker can use. Here is how to fix that.

Choose the Right Base Image#

Your base image choice is the single biggest factor in image size and vulnerability count.