Docker Android Emulator Code Are Needed

Today at DockerCon San Francisco 2019, Docker is releasing a tech preview of improved multi-architecture builds within Docker Desktop.

This tech preview will open the rich Arm ecosystem to the millions of developers already using and developing in Docker Desktop.

Not only will this simplify the development of container images for deployment on Amazon EC2 A1 Arm-based instances in the cloud, but it will help pave the way forward to the one trillion Arm based Edge IoT devices around the world Lets dig into why we are doing this, how it all works, and how you can get started.

A1 EC2 instances are cost and performance optimized for scale-out workloads and offer up to 45 cost savings relative to other EC2 instances.

With this Docker Desktop tech preview, Docker is making it easier than ever to develop containers on, and for Arm servers and devices.

Using the standard Docker tooling and processes you are already familiar with you can start to build, push, pull, and run images seamlessly on different compute architectures.

Docker Android Emulator Code Are Needed

No changes to Dockerfiles or source code are needed to start building for Arm.

Simply rebuild your image using the new features being released today.

Finally, Docker is quickly expanding into Edge and IoT, and we see this as an important step in that process.

Docker has always been about developers, and making things easy.

It bundles and configures many things for users that make developing containers extremely easy.

The hypervisor is responsible for running a lightweight Linux kernel ( LinuxKit ), which is included as part of Docker Desktop.

This fast and lightweight container OS comes packaged with the QEMU emulator, and comes pre-configured with binfmtmisc to run binaries of any supported architecture.

Arm is committed to supporting Dockers QEMU fork and will be helping to maintain this project.

All patches will be upstreamed, but Docker Desktop will contain the latest emulation support.

In the diagram above you can see QEMU emulation for the armv6, armv7 and arm64 Docker images.

With the included emulation, you can transparently build more than just native images Buildx accomplishes this by adding new builder instances based on BuildKit, and leveraging Docker Desktops technology stack to run non-native binaries.

In the future, when these new build features are stable and made generally available, we will drop the x and integrate these features directly into the existing docker build command.

Note that as buildx is experimental, features and flags are subject to change.

Once installed, or if you already have Docker Desktop, you should see the Docker icon in your task tray, click preferences, and simply switch to the edge release.

Lets create a new builder, which gives us access to some new multi-arch features.

Next we will test the workflow, making sure we can build, push, and run multi-arch images.

Mac Docker Android Emulator