The new releases of Dockerfile 1.4 and Buildx v0.8+ come with the ability to define multiple build contexts. This means you can use files from different local directories as part of your build. Let's look at why it’s useful and how you can leverage it in your build...
Engineering
Merge+Diff: Building DAGs More Efficiently and Elegantly
Guest post written by BuildKit maintainer Erik Sipsma. The Big Picture MergeOp and DiffOp are two new features released in BuildKit v0.10. These operations let you assemble container images by composing filesystems (MergeOp) and splitting them apart (DiffOp), all...
Dockershim not needed: Docker Desktop with Kubernetes 1.24+
Docker Desktop includes Kubernetes, optimized and tuned for a fast, distraction-free developer experience. We track upstream Kubernetes changes and manage Kubernetes upgrades so developers can focus on their code rather than cluster administration. Lots of people have...
How to “Dockerize” Your Python Applications
Millions of developers use Python to build modern, scalable applications. For developers who value performance, cross-platform portability, and convenience, deploying these apps within a Docker environment can be advantageous. That said, what kinds of applications can...
Building a Multi-Container .NET App Using Docker Desktop
.NET is a free, open-source development platform for building numerous apps, such as web apps, web APIs, serverless functions in the cloud, mobile apps and much more. .NET is a general purpose development platform maintained by Microsoft and the .NET community on...
10 tips for keeping your Docker containers safe from Log4Shell
This is a guest blog from our friends at Snyk. It originally appeared here. Today we’re pleased to announce an update to our popular Docker and Snyk vulnerability cheat sheet. Since 2020, millions of MacOS and Windows developers have been able to use docker scan to...
Announcing Docker SBOM: A step towards more visibility into Docker images
Today, Docker takes its first step in making what is inside your container images more visible so that you can better secure your software supply chain. Included in Docker Desktop 4.7.0 is a new, experimental docker sbom CLI command that displays the SBOM (Software...
Investing In Performance, Trust and Great Experiences for Developers
Docker is nine years old? Seems both like yesterday and a long time ago! The technology world has changed a lot since then, and Docker has played a key role in making it easy for developers to build and ship applications wherever they’re needed. What were the key...
Tracking Global Vaccination Rates with Docker, Python, and IoT
I'm a major fan of the ESP32-S2 platform of low-power, low-cost, Wi-Fi capable microcontrollers. Adafruit specifically sells a variant that features a 2.9' E-ink display and Python support, called the MagTag. I'm not ashamed to admit I have *far* too many of these...