January 03, 2022 Intro This post shows you how to run Docker inside a secure (rootless) Kubernetes pod. That is, you create one or more Kubernetes pods and inside of each you run Docker. While running Docker inside pods is not new, what’s different here is that the pod will not…

October 21, 2020 Intro Continuous integration (CI) jobs often require interaction with Docker, either for building Docker images and/or deploying Docker containers. One of the most popular DevOps tools for CI is GitLab, as it offers a complete suite of tools for the DevOps lifecycle. …

TL;DR Deploying Kubernetes clusters inside Docker containers is becoming popular for testing and CI/CD. However, existing tools to do this use complex Docker images and unsecure privileged containers. This post describes a new solution that enables containers to run Kubernetes in them, seamlessly and securely. Contents Intro Why Privileged Containers? Why…

Intro Jenkins is one of the best tools for Continuous Integration (CI) due to it’s maturity, huge number of plugins, support for distributed builds, etc. One of the key features of Jenkins is its support for Docker containers (via the Docker plugin), as it makes it easy to create CI pipelines…

Docker containers are great at running application micro-services. But can you run Docker itself inside a Docker container? And can you do so securely? This article describes Docker-in-Docker, the use cases for it, pros & cons of existing solutions, and how Nestybox has developed a new solution that allows you…