Docker Core Engineering

Announcing Docker 17.06 Community Edition (CE)

Today we released Docker CE 17.06  with new features, improvements, and bug fixes. Docker CE 17.06 is the first Docker version built entirely on the Moby Project, which we announced in April at DockerCon. You can see the complete list of changes in the changelog, but let’s take a look at some of the new features. We also created a video version of this post here: Multi-stage builds The biggest feature in 17.06 CE is that multi-stage builds, announced in April at DockerCon, have come to the stable release. Multi-stage builds allow you to build cleaner, smaller Docker images using a single Dockerfile. Multi-stage builds work by building intermediate images that produce an output. That way you can compile code in an intermediate image and use only the output in the final image. So for instance, Java developers commonly use Apache Maven to compile Continue reading…

Docker Core Engineering

Introducing Docker 1.13

Today we’re releasing Docker 1.13 with lots of new features, improvements and fixes to help Docker users with New Year’s resolutions to build more and better container apps. Docker 1.13 builds on and improves Docker swarm mode introduced in Docker 1.12 and has lots of other fixes. Read on for Docker 1.13 highlights. Use compose-files to deploy swarm mode services Docker 1.13 adds Compose-file support to the `docker stack deploy` command so that services can be deployed using a `docker-compose.yml` file directly. Powering this is a major effort to extend the swarm service API to make it more flexible and useful. Benefits include: Specifying the number of desired instances for each service Rolling update policies Service constraints Deploying a multi-host, multi-service stack is now as simple as: docker stack deploy –compose-file=docker-compose.yml my_stack Improved CLI backwards compatibility Ever been bitten by the dreaded Error Continue reading…

Docker Core Engineering

Introducing InfraKit, an open source toolkit for creating and managing declarative, self-healing infrastructure

Written by Bill Farner and David Chung Docker’s mission is to build tools of mass innovation, starting with a programmable layer for the Internet that enables developers and IT operations teams to build and run distributed applications. As part of this mission, we have always endeavored to contribute software plumbing toolkits back to the community, following the UNIX philosophy of building small loosely coupled tools that are created to simply do one thing well. As Docker adoption has grown from 0 to 6 billion pulls, we have worked to address the needs of a growing and diverse set of distributed systems users. This work has led to the creation of many infrastructure plumbing components that have been contributed back to the community. It started in 2014 with libcontainer and libnetwork. In 2015 we created runC and co-founded OCI with an industry-wide set of partners to provide Continue reading…

Docker Core Engineering

Docker Built-in Orchestration Ready for Production: Docker 1.12 Goes GA

We wanted to thank everyone in the community for helping us achieve this great milestone of making Docker 1.12 generally available for production environments. Docker 1.12 adds the largest and most sophisticated set of features into a single release since the beginning of the Docker project. Dozens of engineers, both Docker employees and external contributors, have made substantial contributions to every aspect of 1.12 orchestration including core algorithms, integration into the Docker Engine, documentation and testing. We’re very grateful to the community, which has helped us with feedback, bug reports and new ideas. We couldn’t have done it without the help in particular of the tens of thousands of Docker for Mac and Windows beta users who have been testing our 1.12 features since DockerCon in June. We’ve seen contributions ranging from bash tab completion to UX up-and-down votes that Continue reading…

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Docker Core Engineering

Docker 1.12: Now with Built-in Orchestration!

Three years ago, Docker made an esoteric Linux kernel technology called containerization simple and accessible to everyone. Today, we are doing the same for container orchestration. Container orchestration is what is needed to transition from deploying containers individually on a single host, to deploying complex multi-container apps on many machines. It requires a distributed platform, independent from infrastructure, that stays online through the entire lifetime of your application, surviving hardware failure and software updates. Orchestration is at the same stage today as containerization was 3 years ago. There are two options: either you need an army of technology experts to cobble together a complex ad hoc system, or you have to rely on a company with a lot of experts to take care of everything for you as long as you buy all hardware, services, support, software from them. There is a word for Continue reading…

Docker Core Engineering

Docker 1.10: New Compose file, improved security, networking and much more!

We’re pleased to announce Docker 1.10, jam-packed with stuff you’ve been asking for. It’s now much easier to define and run complex distributed apps with Docker Compose. The power that Compose brought to orchestrating containers is now available for setting up networks and volumes. On your development machine, you can set up your app with multiple network tiers and complex storage configurations, replicating how you might set it up in production. You can then take that same configuration from development, and use it to run your app on CI, on staging, and right through into production. Check out the blog post about the new Compose file to find out more.