Kategorie: Kubernetes

DockerCon 2020: And … That’s a Wrap

DockerCon LIVE 2020 is a wrap, and you rocked it! Our first-ever virtual swing at the traditionally in-person event was a winner on so many levels.

One of our goals was to extend our reach to all developers and members of the community by making the conference digital and free of charge. Mission accomplished! A grand total of 78,000 folks signed up for the May 28 one-day online event.

You hailed from 193 countries (by some counts there are only 196 countries on the planet!). That includes far-flung places like Madagascar, Zimbabwe and even the Maldives. Heck, you even joined us from the Vatican City State (pop. about 800).

Whether you were a seasoned developer or just starting out, our content game was strong. Best practices, how-tos, new product features and use cases, technical deep dives, open source projects—you name it, it was on the menu.

One of our key challenges was replicating the interactivity and spontaneity of in-person events in a virtual setting, but our efforts paid off. We made sure speakers and interviewees were available for live Q&A for their whole session to engage with attendees, resulting in over 21K chats. And remember those popular Hallway Tracks hosted by Captains at past DockerCons? We did our best to virtualize those with Captains On Deck, one of the three co-streaming channels where rotating Docker Captains were there for folks to hang out, talk shop and get questions answered in real time.

Here are some of the event highlights:

In his keynote, Docker For Developers Now More Than Ever, CEO Scott Johnston wasted zero time showing (not just telling) how cool new Docker features help dev teams build apps and get them post-haste from code to cloud. (Watch it here.)

RedMonk co-founder and industry analyst James Governor gave a sweeping overview of how far open source and distributed computing have come in his keynote: Open Source and Developer Culture: History, Future and Distributed Work. (Watch it here—starts at 37:00)

Lukonde Mwila of Entelect dove into how software engineers can dockerize multi-container applications and deploy them to the cloud. (Watch it here.)

Docker’s Peter McKee walked acolytes through how to get started with Docker, including installing Docker and Kubernetes, building our first images, running our images locally and more. (Watch it here.)

Top Rated Docker Use Case Sessions: 
Using Docker Hub at Scale to Support Micro Focus’s Delivery and Deployment Model – Patrick Deloulay, Micro Focus
Predicting Space Weather with Docker – Chris Lauer, NOAA Space Weather Prediction Center
Dockerizing Health: Helping Us Treat Childhood Cancer – Children’s Cancer Institute

Top Rated Technical Sessions:  How to Get Started with Docker – Peter McKee, Docker Simplify All the Things with Docker Compose – Michael Irwin, Virginia Tech Hands-on Helm – Jessica Deen, Microsoft Become a Power User with Microsoft Visual Studio Code – Brian Christner, 56K + Docker Captain Build & Deploy Multi-Container Applications to AWS – Lukonde Mwila, Entelect

Let’s not forget all the insightful interviews and panel discussions presented by theCube from Docker experts and organizations including National Institutes of Health, Children’s Cancer Institute, Microsoft, AWS, Snyk, Google, Cockroach Labs, NGNIX and Redmonk.

Thank you for helping make DockerCon LIVE a spectacular experience for us all. We learned a ton and we’ll be using it all to make the next one even better! If you missed a session, you can see all the conference sessions here.

The post DockerCon 2020: And … That’s a Wrap appeared first on Docker Blog.
Quelle: https://blog.docker.com/feed/

Multi-arch build, what about CircleCI?

Following the previous article where we saw how to build multi arch images using GitHub Actions, we will now show how to do the same thing using another CI. In this article, we’ll consider CircleCI, which is one of the most used CI SaaS.

To start building your image with CircleCI, you will first need to create .circleci/config.yml file:

version: 2jobs:  build:    docker:      – image: docker:stable    steps:      – checkout      – setup_remote_docker:          version: 18.09.3      – run: docker version

You may notice that we specified using version 18.09.3 of the Docker Engine because buildx requires version 18.09 or later but CircleCI doesn’t provide any version above 18.09.3.

At this point we are able to interact with the Docker CLI but we don’t yet have the buildx plugin installed. To install it, we will download a build from GitHub.

version: 2jobs:  build:    docker:      – image: docker:stable    steps:      – checkout      – setup_remote_docker:          version: 18.09.3      – run: apk add make curl      – run: mkdir -vp ~/.docker/cli-plugins/      – run: curl –silent -L –output ~/.docker/cli-plugins/docker-buildx https://github.com/docker/buildx/releases/download/v0.3.1/buildx-v0.3.1.linux-amd64      – run: chmod a+x ~/.docker/cli-plugins/docker-buildx      – run: docker buildx version

We are now able to use buildx. It’s quite verbose, so instead of reinstalling buildx each time you want to build something, you can use a different origin image with buildx already installed.

version: 2jobs: build:   docker:     – image: jdrouet/docker-with-buildx:stable   steps:     – checkout     – setup_remote_docker:         version: 18.09.3     – run: docker buildx version

Now it’s time to build for multiple architectures. We’ll use the same Dockerfile that we used for the previous article and the same build command:

FROM debian:buster-slimRUN apt-get update   && apt-get install -y curl   && rm -rf /var/lib/apt/lists/*ENTRYPOINT [ “curl” ]

Now modify the CircleCI configuration file as follows:

version: 2jobs: build:   docker:     – image: jdrouet/docker-with-buildx:stable   steps:     – checkout     – setup_remote_docker:         version: 18.09.3     – run: |         docker buildx build           –platform linux/arm/v7,linux/arm64/v8,linux/amd64           –tag your-username/multiarch-example:buildx-latest .

Navigating to the CircleCI build dashboard, you should see the following result:

The last step is now to store the image on the Docker Hub. To do so we’ll need an access token from Docker Hub to get write access.

Once you created it, you’ll have to set it in your repository settings in the Secrets section. We’ll create DOCKER_USERNAME and DOCKER_PASSWORD variables to login afterward.

Once this is done, you can add the login step and the –push to the buildx command as follows:

version: 2jobs: build:   docker:     – image: jdrouet/docker-with-buildx:stable   steps:     – checkout     – setup_remote_docker:         version: 18.09.3     – run: docker login -u “$DOCKER_USERNAME” -p “$DOCKER_PASSWORD”     – run: |         docker buildx build –push           –platform linux/arm/v6,linux/arm/v7,linux/arm64/v8,linux/i386,linux/amd64           –tag your-username/multiarch-example:buildx-latest .

And voila, you can now create a multi arch image each time you make a change in your codebase!
The post Multi-arch build, what about CircleCI? appeared first on Docker Blog.
Quelle: https://blog.docker.com/feed/