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Category Archives for "Docker Blog"

Download and Try the Tech Preview of Docker Desktop for M1

Last week, during the Docker Community All Hands, we announced the availability of a developer preview build of Docker Desktop for Macs running on M1 through the Docker Developer Preview Program. We already have more than 1,000 people testing these builds as of today. If you’re interested in joining the program for future releases you should do it today!

As I’m sure you know by now, Apple has recently shipped the first Macs based on the new Apple M1 chips. Last month my colleague Ben shared our roadmap for building a Docker Desktop that runs on this new hardware. And I’m delighted to tell you that today we have a public preview that you can download and try out.

Like many of you, we at Docker have been super excited to receive and code with these new computers: they just feel so fast! We also know that Docker Desktop is a key part of the development cycle for over 3M developers using Docker Desktop with over half of you on Macs. To support all our Mac users we’ve been working hard to get Docker Desktop ready to run on the new M1 hardware. It is not release quality yet, or Continue reading

Docker Desktop 3.0.0: Smaller, Faster Releases

Today with the release of Docker Desktop 3.0.0, we’re launching several major improvements to the way we distribute Docker Desktop. From now on we will be providing all updates as deltas from the previous version, which will reduce the size of a typical update from hundreds of MB to tens of MB. We will also download the update in the background so that all you need to do to benefit from it is to restart Docker Desktop. Finally, we are removing the Stable and Edge channels, and moving to a single release stream for all users.

Changes Based on Your Feedback

Many of you have given us feedback that our updates are too large, and too time consuming to download and install. Until now, we only provided complete installers, which meant that each update required downloading a file of several hundred MB. But from now on we will be providing all updates as deltas from the previous version, which will typically be only tens of MB per release.

We have also heard that updates are offered at an inconvenient time, when you launch Docker Desktop or when you reboot your machine, which are times that you want Continue reading

Expanding Docker’s Developer Preview Program

Back in April, we did a limited launch of a Desktop Developer Preview Program, an early access program set up to enable Docker power-users to test, experiment with and provide feedback on new unreleased features on Docker Desktop. The aim was to empower the community to work in lock-step with Docker engineers and help shape our product roadmap.

For this first phase of the program, we limited the program to a small cohort of community members to test the waters and gather learnings as we planned to roll-out a full-fledged program later in the year. 

Today, we’re thrilled to announce the official launch of the program, renaming it the Docker Developer Preview Program and broadening its scope to also include Docker Engine on Linux. 

What are the benefits of joining the program?

First and foremost, this is an opportunity for anyone in the community to help shape and improve the experience of millions of Docker users around the world. As a member, you get direct access to the people who are building our products everyday: our engineering team, product managers, community leads etc… Through the program’s private Slack channel, you get to share your feedback, tell us Continue reading

Introducing Docker Engine 20.10

We are pleased to announce that we have completed the next major release of the Docker Engine 20.10. This release continues Docker’s investment in our community Engine adding multiple new features including support for cgroups V2, moving multiple features out of experimental including docker run --mount and rootless, along with a ton of other improvements to the API, client and build experience. The full list of changes can be found as part of our change log. 

Docker engine is the underlying tooling/client that enables users to easily build, manage, share and run their container objects on Linux. The Docker engine is made up of 3 core components:

  • A server with a long-running daemon process dockerd.
  • APIs which specify interfaces that programs can use to talk to and instruct the Docker daemon.
  • A command line interface (CLI) client docker.

For those who are curious about the recent questions about Docker Engine/K8s, please have a look at Dieu’s blog to learn more. 

Along with this I want to give a huge thank you to everyone in the community and all of our maintainers who have also contributed towards this Engine release. Without their contribution, hard work and support we Continue reading

Supporting Open Source Projects at Docker

At Docker, we are committed to building a platform that enables collaboration and innovation within the development community. Last month, we announced the launch of a special program to expand our support for Open Source projects that use Docker. The eligible projects that meet the program’s requirements (ie. they must be open source and non-commercial) can request to have their respective OSS namespaces whitelisted and see their data-storage and data-egress restrictions lifted.

The projects we’re supporting, and the organizations behind them, are as diverse as they are numerous, ranging from independent researchers developing frameworks for machine learning, to academic consortia collecting environmental data to human rights NGOs building encryption tools. To date, we’re thrilled to see that more than 80 non-profit organizations, large and small, from the four corners of the world have joined the program. 

Here are but a few diverse projects we’re supporting: 

The Vaccine Impact Modelling Consortium aims to deliver more sustainable, efficient, and transparent approach to generating disease burden and vaccine impact estimates. 

farmOS is a web-based application for farm management, planning, and record keeping. It is developed by a community of farmers, developers, researchers, and organizations with the aim of providing a standard Continue reading

What developers need to know about Docker, Docker Engine, and Kubernetes v1.20

The latest version of Kubernetes Kubernetes v1.20.0-rc.0 is now available. The Kubernetes project plans to deprecate Docker Engine support in the kubelet and support for dockershim will be removed in a future release, probably late next year. The net/net is support for your container images built with Docker tools is not being deprecated and will still work as before.

Even better news however, is that Mirantis and Docker have agreed to partner to maintain the shim code standalone outside Kubernetes, as a conformant CRI interface for Docker Engine. We will start with the great initial prototype from Dims, at https://github.com/dims/cri-dockerd and continuing to make it available as an open source project, at https://github.com/Mirantis/cri-dockerd. This means that you can continue to build Kubernetes based on Docker Engine as before, just switching from the built in dockershim to the external one. Docker and Mirantis will work together on making sure it continues to work as well as before and that it passes all the conformance tests and works just like the built in version did. Docker will continue to ship this shim in Docker Desktop as this gives a great developer experience, and Mirantis will be Continue reading

Join Docker’s Community All-Hands

Openness and transparency are key pillars of a healthy open source community. We’re constantly exploring ways to better engage the Docker community, to better incorporate feedback and to better foster participation.

To this end, we’re very excited to host our first Community All-Hands on Thursday December 10th at 8am PST / 5pm CET. This one-hour event will be a unique opportunity for Docker staff and the broader Docker community to come together for company and product updates, live demos, community shout-outs and a Q&A. 

The All-Hands will include updates from:

  • Scott Johnston (CEO, Docker) who will go over Docker’s strategic vision and where the company is heading in 2021 and beyond
  • Donnie Berkholz (VP of Products, Docker) who will walk us through our product roadmap  
  • Jean-Laurent de Morlhon (VP of Engineering, Docker) who will provide an inside peek on engineering.

We’ll then dive into specific product updates around Docker Desktop, Hub and Developer Tooling, followed by two awesome live demos where we’ll show cool new features and integrations. 

A Community All-Hands is not complete without a community update. We will announce new community initiatives and recognize outstanding contributors who have gone above and beyond to help push Docker Continue reading

The Docker Developer Guide to AWS re:Invent

This is the busiest time of the year for developers targeting AWS. Just over a week ago we announced the GA of Docker Compose for AWS, and this week we’re getting ready to virtually attend AWS re:Invent. re:Invent is the annual gathering of the entire AWS community and ecosystem to learn what’s new, get the latest tips and tricks, and connect with peers from around the world. Instead of the traditional week-long gathering of 60,000 attendees in Las Vegas, the event has pivoted to a flexible three-week online conference. This year the event is free, and anyone can participate on their own schedule. This blog post covers highlights of the event so Docker developers can get the most from re:Invent.


In the kickoff keynote by CEO Andy Jassy, AWS announced a number of new features for container developers, including a new capability, ECS Anywhere, which allows Amazon Elastic Container Service (ECS) to run on-prem and in the cloud to support hybrid computing workloads as well as the launch of AWS Proton, an end-to-end pipeline to deliver containerized and microservices applications. Separately, AWS also announced a new public Elastic Container Registry (ECR) and gallery today. We’re excited to see a Continue reading

Docker and AWS Resources for Developers

AWS re:Invent kicks off this week and if you are anything like us, we are super geeked out to watch and attend all the talks that are lined up for the next three weeks.

To get ready for re:Invent, we’ve gathered some of our best resources and expert guidance to get the most out of the Docker platform when building apps for AWS. Check out these blogs, webinars and DockTalks from the past few weeks to augment your re:Invent experience over the next three weeks:

Expert Guidance from the Docker Team

  • AWS Howdy Partner
    • AWS Howdy Partner Twitch Show: Back in July, I (@pmckee) was a guest on the AWS Howdy Partner show hosted on Twitch. Follow along as we walked through deploying a multi-container application to AWS ECS using the Docker CLI.

Welcome Canonical to Docker Hub and the Docker Verified Publisher Program

Today, we are thrilled to announce that Canonical will distribute its free and commercial software through Docker Hub as a Docker Verified Publisher. Canonical and Docker will partner together to ensure that hardened free and commercial Ubuntu images will be available to all developer software supply chains for multi-cloud app development. 

Canonical is the publisher of the Ubuntu OS, and a global provider of enterprise open source software, for all use cases from cloud to IoT. Canonical Ubuntu is one of the most popular Docker Official Images on Docker Hub, with over one billion images pulled. With Canonical as a Docker Verified Publisher, developers who pull Ubuntu images from Docker Hub can be confident they get the latest images backed by both Canonical and Docker. 

The Ideal Container Registry for Multi-Cloud 

Canonical is the latest publisher to choose Docker Hub for globally sharing their container images. With millions of users, Docker Hub is the world’s largest container registry, ensures Canonical can reach their developers regardless where they build and deploy their applications. 

This partnership, which covers both free and commercial Canonical LTS images, so developers can confidently pull the latest images straight from the source without concern Continue reading

Docker Captain Take 5 – Ajeet Singh Raina

Docker Captains are select members of the community that are both experts in their field and are passionate about sharing their Docker knowledge with others. Today, we’re introducing “Docker Captains Take 5”, a regular blog series where we get a closer look at the Docker experts who share their knowledge online and offline around the world. A different Captain will be featured each time and we will ask them the same broad set of questions ranging from what their best Docker tip is to whether they prefer cats or dogs (personally, we like whales and turtles over here). To kick us off we’re interviewing Ajeet Singh Raina who has been a Docker Captain since 2016 and is a DevRel Manager at Redis Labs. He is based in Bangalore, India.  

How/when did you first discover Docker?

It was the year 2013 when I watched Solomon Hykes for the first time presenting “The Future of Linux Containers” at PyCon in Santa Clara. This video inspired me to write my first blog post on Docker and the rest is history.

What is your favorite Docker command?

The docker buildx CLI  is one of my favorite commands. It allows you to Continue reading

Docker Compose for Amazon ECS Now Available

Docker is pleased to announce that as of today the integration with Docker Compose and Amazon ECS has reached V1 and is now GA! ?

We started this work way back at the beginning of the year with our first step – moving the Compose specification into a community run project. Then in July we announced how we were working together with AWS to make it easier to deploy Compose Applications to ECS using the Docker command line. As of today all Docker Desktop users will now have the stable ECS experience available to them, allowing developers to use docker compose commands with an ECS context to run their containers against ECS.

As part of this we want to thank the AWS team who have helped us make this happen: Carmen Puccio, David Killmon, Sravan Rengarajan, Uttara Sridhar, Massimo Re Ferre, Jonah Jones and David Duffey.

Getting started with Docker Compose & ECS

As an existing ECS user or a new starter all you will need to do is update to the latest Docker Desktop Community version (2.5.0.1 or greater) store your image on Docker Hub so you can deploy it (you can get started with Hub here Continue reading

Rate Limiting by the Numbers

As a critical part of Docker’s transition into sustainability, we’ve been gradually rolling out limits on docker pulls to the heaviest users of Docker Hub. As we near the end of the implementation of the rate limits, we thought we’d share some of the facts and figures behind our effort. Our goal is to ensure that Docker becomes sustainable for the long term, while continuing to offer developers 100% free tools to build, share, and run their applications.

We announced this plan in August with an effective date of November 1. We also shared that “roughly 30% of all downloads on Hub come from only 1% of our anonymous users,” illustrated in this chart:

This shows the dramatic impact that a very small percentage of anonymous, free users have on all of Docker Hub. That excessive usage by just 1%–2% of our users results not only in an unsustainable model for Docker but also slows performance for the other 98%–99% of the 11.3 million developers, CI services, and other platforms using Docker Hub every month. Those developers rely upon us to save and share their own container images, as well as to pull images from Docker Verified Publishers Continue reading

Apple Silicon M1 Chips and Docker

Revealed at Apple’s ‘One More Thing’ event on Nov 10th, Docker was excited to see new Macs feature Apple silicon and their M1 chip. At Docker we have been looking at the new hypervisor features and support that are required for Mac to continue to delight our millions of customers. We saw the first spotlight of these efforts at Apple WWDC in June, when Apple highlighted Docker Desktop on stage. Our goal at Docker is to provide the same great experience on the new Macs as we do today for our millions of users on Docker Desktop for Mac, and to make this transition as seamless as possible. 

Building the right experience for our customers means getting quite a few things right before we push a release. Although Apple has released Rosetta 2 to help move applications over to the new M1 chips, this does not get us all the way with Docker Desktop. Under the hood of Docker Desktop, we run a virtual machine, to achieve this on Apple’s new hardware we need to move onto Apple’s new hypervisor framework. We also need to do all the plumbing that provides the core experience of Docker Continue reading

Taking Your App Live with Docker and the Uffizzi App Platform


Tune in December 10th 1pm EST for our
Live DockTalk:  Simplify Hosting Your App in the Cloud with Uffizzi and Docker

We’re excited to be working with Uffizzi on this joint blog.  Docker and Uffizzi have very similar missions that naturally complement one another.  Docker helps you bring your ideas to life by reducing the complexity of application development and Uffizzi helps you bring your ideas to life by reducing the complexity of cloud application hosting. 

This blog is a step-by-step guide to setting up automated builds from your Github repo via Docker Hub and enabling Continuous Deployment to your Uffizzi app hosting environment.




Prerequisites
To complete this tutorial, you will need the following:

Docker Overview

Docker is an open platform for developing, shipping, and running applications. Docker containers separate your applications from your infrastructure so you can deliver software quickly. 

With Docker, you can manage your infrastructure in the same ways you manage your applications. By Continue reading

Rate Limiting Questions? We have answers

As we have been implementing rate limiting on Docker Hub for free anonymous and authenticated image pulls, we’ve heard a lot of questions from our users about how this will affect them. And we’ve also heard a number of statements that are inaccurate or misleading about the potential impacts of the change. We want to provide some answers here to help Docker users clearly understand the changes, quantify what is involved, and help developers choose the right Docker subscription for their needs.

First let’s look at the realities of what rate limiting looks like, and quantify what is still available for free to authenticated Docker users. Anyone can use a meaningful number of Docker Hub images for free. Anonymous, unauthenticated Docker users get 100 container pull requests per six hours. And when a user signs up for a free Docker ID, they get 2X the quantity of pulls. At 200 pulls per six hours, that is approximately 24,000 container image pulls per month per free Docker ID. This egress level is adequate for the bulk of the most common Docker Hub usage by developers. (Docker users can check their usage levels at any time through the command line. Docker developer Continue reading

Combining Snyk Scans in Docker Desktop and Docker Hub to Deploy Secure Containers

Last week, we announced that the Docker Desktop Stable release includes vulnerability scanning, the latest milestone in our container security solution that we are building with our partner Snyk. You can now run Snyk vulnerability scans directly from the Docker Desktop CLI.  Combining this functionality with Docker Hub scanning functionality that we launched in October provides you with the flexibility of including vulnerability scanning along multiple points of your development inner loop, and provides better tooling for deploying secure applications.

You can decide if you want to run your first scans from the Desktop CLI side, or from the Hub.  Customers that have used Docker for a while tend to prefer starting from the Hub. The easiest way to jump in is to configure the Docker Hub repos to automatically trigger scanning every time that you push an image into that repo. This option is configurable for each repository, so that you can decide how to onboard these scans into your security program. (Docker Hub image is available only for Docker Pro and Team subscribers, for more information about subscriptions visit the Docker Pricing Page.)

Once you enable scanning, you can view the scanning results either Continue reading

Compose CLI ACI Integration Now Available

Today we are pleased to announce that we have reached a major milestone, reaching GA and our V1 of both the Compose CLI and the ACI integration. ?

In May we announced the partnership between Docker and Microsoft to make it easier to deploy containerized applications from the Desktop to the cloud with Azure Container Instances (ACI). We are happy to let you know that all users of Docker Desktop now have the ACI experience available to them by default, allowing them to easily use existing Docker commands to deploy and manage containers running in ACI. 

As part of this I want to also call out a thank you to the MSFT team who have worked with us to make this all happen! That is a big thank you to Mike Morton, Karol Zadora-Przylecki, Brandon Waterloo, MacKenzie Olson, and Paul Yuknewicz.

Getting started with Docker and ACI 

As a new starter, to get going all you will need to do is upgrade your existing Docker Desktop to the latest stable version (2.5.0.0 or later), store your image on Docker Hub so you can deploy it (you can get started with Hub here) and then lastly you Continue reading

Updates on Hub Rate Limits, Partners and Customer Exemptions

The gradual enforcement of the Docker Hub progressive rate limiting enforcement on container image pulls for anonymous and free users began Monday, November 2nd. The next three hour enforcement window on Wednesday, November 4th from 9am to 12 noon Pacific time. During this window, the eventual final limit of 100 container pull requests per six hours for unauthenticated users and 200 for free users with Docker IDs will be enforced. After that window, the limit will rise to 2,500 container pull requests per six hours. 

As we implement this policy, we are looking at the core technologies, platforms and tools used in app pipelines to ensure a transition that supports developers across their entire development lifecycle. We have been working with leading cloud platforms, CI/CD providers and other ISVs to ensure their customers and end users who use Docker have uninterrupted access to Docker Hub images. Among these partners are the major cloud hosting providers, CI/CD vendors such as CircleCI, and OSS entities such as Apache Software Foundation (ASF). You can find more information about programs on our Pricing Page as well as links to contact us for information about programs for ISVs and companies with more than 500 Continue reading

Expanded Support for Open Source Software Projects

Docker remains committed to providing a platform where the non-commercial open source developers can continue collaborating, innovating and pushing this industry into new directions.  

In August, we announced to our dedicated community and ecosystem that we are creating new policies for image retention and data pull rates. We made these changes to make Docker a sustainable business for the long term, so that we can continue supporting the developer community and ecosystem that depends on the Docker platform. We got great feedback from our extensive user base, and adjusted our policies to delay the policies on image retention until mid-2021. The plan for data pull rates is moving forward, and starting today limits will be gradually enforced, with the plan to be fully applied in the coming weeks. The final limits will be:

  • Unauthenticated users will be restricted to 100 pulls every 6 hours
  • Authenticated free users will be restricted to 200 pulls every 6 hours

To support the open source community, Docker has created a special program for Open Source projects to get continued free access and freedom from restrictions for their communities and their users. For the approved, non-commercial, open source projects, we are thrilled to announce Continue reading

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