However, it is a Dockerfile best practice to avoid doing that. Our recent report highlighted that 58% of images are running the container entrypoint as root (UID 0). These tips follow the principle of least privilege so your service or application only has access to the resources and information necessary to perform its purpose. We include a closing section pointing to related container image security and shifting left security resources to apply before and after the image building. Please remember that Dockerfile best practices are just a piece in the whole development process. We have grouped our selected set of Dockerfile best practices by topic. ![]() Restrict your application capabilities.Sign your images, and verify them on runtime.Protect the docker socket and TCP connections.Scan your images locally during development.Reduce the number of layers, and order them intelligently.Be aware of the Docker context, and use.Never put secrets or credentials in Dockerfile instructions.Use distroless images, or build your own from scratch.Make executables owned by root and not writable.This article dives into a curated list of Docker security best practices that are focused on writing Dockerfiles and container security, but also cover other related topics, like image optimization: Getting rid of the known risks in advance will help reduce your security management and operational overhead.įollowing the best practices, patterns, and recommendations for the tools you use will help you avoid common errors and pitfalls. We recently covered in this blog how image scanning best practices helps you shift left security.Ī well crafted Dockerfile will avoid the need for privileged containers, exposing unnecessary ports, unused packages, leaked credentials, etc., or anything that can be used for an attack. Much of this overhead can be prevented by shifting left security, tackling potential problems as soon as possible in your development workflow. If you are familiar with containerized applications and microservices, you might have realized that your services might be micro but detecting vulnerabilities, investigating security issues, and reporting and fixing them after the deployment is making your management overhead macro. ![]() Learn how to prevent security issues and optimize containerized applications by applying a quick set of Dockerfile best practices in your image builds. You may not use this file except in compliance with the License.Security and visibility for cloud applications Licensed under the Apache License, Version 2.0 (the "License") ![]() If you have an issue related to one of our containers, please go to its specific repository in our GitHub organization and report an issue there. If you have an issue related to one of our charts, please go to the repository and report an issue there. You can have important information about a Cloud provider: There is an updated documentation at where you can find tutorials and FAQs. If the documentation didn't help you, we strongly suggest you to check the resolved issues and the on going ones before addressing an issue. Popular applications, provided by Bitnami, ready to launch on:īefore continuing, please review our useful guides about how to configure and use your application in our documentation
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