Kategorie: Kubernetes

Captains Take 5 – Nick Janetakis

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. “Docker Captains Take 5” is a regular blog series where we get a closer look at our Captains and 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). Today, we’re interviewing Nick Janetakis who has been a Docker Captain since 2016. He is a freelance full stack developer / teacher and is based in New York, United States.

How/when did you first discover Docker?

I was doing freelance web development work and kept running into situations where it was painful to set up my development environment for web apps created with Ruby on Rails. Different apps had different Ruby version requirements as well as needing different PostgreSQL and Redis versions too.

I remember running a manually provisioned Linux VM on my Windows dev box and did most of my development there. I even started to use LXC directly within that Linux VM.

That wasn’t too bad after investing a lot of time to automate things but then it was always a song and dance to get everything running on my client’s machines as well as production.

In 2014 I first discovered Docker. I think it was around version 1.4 at the time. I remember reading about Docker and deciding it was stable enough to give it a shot and I’ve been using it ever since.

What is your favorite Docker command?

It’s for sure docker-compose up. It’s by far my most used command.

There’s what drew me into using Docker in the first place. It’s the promise that all I have to do is run 1 or 2 commands and my whole tech stack will be up and running on all major platforms.

Sure back in 2014 it was called fig up and perhaps in the future docker-compose up will be replaced by a native docker command, but the same concept has applied for all these years. 

What is your top tip you think other people don’t know for working with Docker?

You can use the same docker-compose.yml file in development and production and still have the flexibility to run different containers in each environment by using a docker-compose.override.yml file and then ignoring it from version control.

This comes in very handy for running a local copy of PostgreSQL or a Webpack dev server in development but then in production use a managed PostgreSQL database from your cloud provider while serving your pre-compiled assets from nginx or a CDN.

I made a video about this a while back on my blog. Speaking of which, there’s 100+ assorted Docker related posts and videos on my site. I tend to post everything I’ve learned there.

What’s the coolest Docker demo you have done/seen?

The very first time I ran a docker-compose up to bring up a web server, background worker, PostgreSQL and Redis in about 5 seconds I knew things were going to be good.

This wasn’t part of a specific presentation or recorded demo. It was demonstrating to myself that Docker has legs and wasn’t just the next hyped up technology that’s going to fizzle out in 6 months.

I’m usually not interested in watching toy demos or seeing one sliver of something applied in a non-real world use case to make it look appealing. I’m all about practical examples that help me in my day-to-day. That’s why I think something as basic as seeing a fully Dockerized / production-ready web app being started up with docker-compose up is cool.

What have you worked on in the past 6 months that you’re particularly proud of?

Helping some of my freelance clients deploy their web applications in production-ready ways. It’s very satisfying to convert ideas and code into solutions that help folks do what they want to do.

I really enjoy learning new things but to me, code has always been a means to an end. The journey is fun and truly enjoyable but at the end of the day going from A to B is the goal and it always makes me happy to see others be able to fulfill their goals.

I also released 26 episodes of my Running in Production podcast.

It’s a show where a new guest comes on every week and we talk about how they built and deployed a web app they’ve created, what tech stack they used, best tips and lessons learned. As a side note, quite a lot of folks ranging from solo developers to massively popular companies are using Docker in their day-to-day.

What do you anticipate will be Docker’s biggest announcement this year?

I have no idea what’s coming but I hope layer diffing and smart layer updates becomes a thing because one of the biggest time sinks of using Docker in development is having your application’s package dependency layer get invalidated from 1 change. That would be changing something like Python’s requirements.txt file, Ruby’s Gemfile or Node’s package.json file.

Changing a dependency usually involves having to wait 5-10 minutes for all dependencies to get rebuilt but without Docker, that same process would likely finish in 10 seconds or less. If layer diffing and updates were possible that could get things down to 10 seconds with Docker too.

That would be a very welcome change to have layer diffing and smart updates. Especially in new projects where you’re changing your dependencies on a regular basis.

What do you think is going to be Docker’s biggest challenge this year?

It’s hard to say but with Docker’s new primary focus on the developer experience, I’m optimistic because over the last few years it felt like Docker was a bit scattered trying to figure out who their target customer is and how to generate revenue.

I’m happy Docker finally figured out what they want to do. I don’t mean that in a condescending way either. I know how hard it is to find your true calling and target audience.

The biggest challenge would probably be figuring out how to make Docker a sustainable business. I hope it becomes one of those things where Docker transforms from an 80% upgrade / 10% sidegrade / 10% downgrade on some things to a 100% upgrade to the point where for something like web development it becomes a no brainer to always use Docker with no compromises.

Maybe I’m living in a fantasy world but I like to think that if things ever got to that point then the business problem would solve itself through either public funding or getting bought out by a company that will let everyone continue doing what they’re doing and make the best possible developer experience conceived on planet Earth.

What are some personal goals for the next year with respect to the Docker community?

I’d like to ship my next course which focuses on deploying web applications with Docker. This has been a long time coming and I’ve written and rewritten the course twice now over the last 2 years.

On the bright side, I’ve got everything I want to include in the course all put together. It’s everything I’ve learned from building and deploying Dockerized web apps since 2014.

If anyone wants to sign up to get notified with a launch discount when it’s released you can do so at https://nickjanetakis.com/courses/deploy-to-production.

Besides courses, I’ll continue blogging and creating YouTube videos about Docker and other web development topics just as I have for the last 5+ years.

Most of the blog posts, videos and courses I create come from real-world experience so I’m also looking forward to working with more folks this year as a part of my freelance business.

What talk would you most love to see at DockerCon 2021?

If I had to pull a request out of thin air I’d like to see assorted use case demos or presentations on how developers and companies are using Docker out in the wild.

Maybe some type of collaboration video where 5-6 people spend ~10 minutes going over their setups. Perhaps even have 2 of these videos. One with larger companies and one with solo developers or small teams. This way we can see usage patterns from multiple perspectives.

Looking to the distant future, what is the technology that you’re most excited about and that you think holds a lot of promise?

If you asked me this question 6 years ago I would have said Docker.

And I’m still going with Docker today because I can see a future where there’s a zero compromise development experience that’s lightning fast with flawless code editor integration in all editors.

That would be a wonderful place to be in.

Rapid fire questions…

What new skill have you mastered during the pandemic?

I’ve never been more confident in my ability to wash my hands.

Salty, sour or sweet?

Can I pick sweet and sour?

Dogs, cats, neither, both?

Turtles all the way down.

Beach or mountains?

Probably mountains because I really like hiking and you can escape the sun. But at the same time there’s something super relaxing about seeing and hearing the ocean. Tough question!

Your most often used emoji?

is what I commonly reach for on GitHub when leaving a reaction to something.
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How to Write a Great Talk Proposal for DockerCon LIVE 2021

First off, a big thank you to all those who have already submitted a talk proposal for DockerCon LIVE 2021. We’re seeing some really excellent proposals and we look forward to reviewing many more! We opened the CFP on February 8th and with a few more weeks to go before we close the CFP on March 15th there’s still lots of time to submit a talk. 

If you’re toying with the idea of submitting a talk but you’re still not sure whether or not your topic is interesting enough, or how to approach your topic, or if you just need a little push in the right direction to write up your proposal and click on “Send”, below are a few resources we thought you might find interesting. 

Amanda Sopkin wrote a great article a few years ago that has now become a reference for conference organizers sharing tips on how to get a technical talk accepted for a conference.  We also like Todd Lewis’ 13 tips on how to write an awesome talk proposal for a tech conference. Other interesting articles include: 

How to write a successful conference proposal by Karolina SzczurTips for your next tech conference by Rob ReillyHow to prepare and write a tech conference talk by Lena Reinhard

The Audience at DockerCon

As you prepare to write your proposal, perhaps the most important thing to keep in mind is the audience you’ll be speaking to. Remember that the people in the audience will be a lot like you – keen to discover new ways to simplify and accelerate their workflow, and exploring the right choice tools, application stacks, and deployment environments for each project. You should also expect a broad spectrum of companies and organizations attending DockerCon, large and small, for-profit and non-profit, and from a plethora of industries (eg. aviation, education, retail, health, aerospace, finance, robotics, etc..)

What we are looking for 

The theme of this year’s DockerCon is developer team collaboration in the new remote-first world.

Before submitting a talk proposal, please make sure that your topic falls under one or several of the following thematic buckets:

Team CollaborationConfiguring and managing teams in Docker Hub; Configuring and sharing local development environments;Secure DevelopmentSecurity best practices; Shifting security concerns left; Finding and fixing vulnerabilities;Best PracticesDockerfiles and build best practices; Setting up local development environments;Case Studies / Lessons LearnedLessons learned when starting with Docker toolchain; Case studies around streamlining and delivering features faster; Lessons learned as you matured your SDLC and Docker;Contributing to DockerHow to get started contributing; Understanding open source software and how Docker is developed;App Modernization and MigrationBest practices in refactoring monolithic applications to cloud-first using Docker; Moving your applications to the cloud;

First timer? Fantastic! 

Everyone has to start somewhere and a virtual conference makes it a lot less intimidating to share your knowledge. If you aren’t sure what to talk about, think about an interesting problem you’ve solved, details of your day-to-day workflow, and ask a friend what they think you should talk about. Sometimes the best topics are things that a coworker finds interesting about your skills or role. 

How DockerCon LIVE works

To allow for conversation and ensure a stress-free delivery for the speaker, session talks for DockerCon LIVE will be pre-recorded and played at a specific time during the conference. Speakers will be in chat with the audience during their session and be available to answer questions. Worry not– the Docker team will help speakers prepare, record and review their content. We love the virtual format of DockerCon LIVE and we are super excited about all the improvements we will bring to our conference platform which will provide an even better experience for speakers (new and seasoned) and attendees alike.

We’re here to help

We’re always happy to chat about your ideas or answer any questions you may have so make sure to join the DockerCon’s channel #dockercon2021 on our Community slack and drop us a line or just ping @Peter (Mckee) or @William (Quiviger) directly. 

Last but not least don’t forget to pre-register here to receive notifications about when registrations for DockerCon LIVE 2021 officially open!
The post How to Write a Great Talk Proposal for DockerCon LIVE 2021 appeared first on Docker Blog.
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Join Us Next Week for Docker’s Community All-Hands

Next week, on Thursday March 11th, 2021 (8am PST/5pm CET) we’ll be hosting our next quarterly Docker Community All-Hands. This free virtual event, open to everyone, is a unique opportunity for Docker staff and the broader Docker community to come together for company and product updates, live demos, community presentations and a live Q&A. 

As luck would have it, this All-Hands will coincide almost to the day with Docker’s 8th birthday (yay!). To mark the occasion, we’re going to make this event extra special by introducing : 

a longer format (ie. 3 hours instead of 1 hour)lots more content (ie. demos, community lightning talks and workshops)regional content in French, Spanish and Portuguese! 

We’re also really excited about the new video platform we’ll be using that makes it much easier for attendees to engage/connect/share with each other.

Who will be presenting

Members of Docker’s leadership team including Scott Johnston (CEO), Justin Cormack (CTO), Donnie Berkholz (VP of Products) and Jean-Laurent de Morlhon (VP of Engineering)Members of Docker’s product, engineering and community teamDocker Captains and Community Leaders

What we’ll cover

Company vision and product roadmap for 2021 and beyondHigh-level overview of Docker’s technology strategy Product updates and live demos of new features and integrationsCommunity news and updatesHands-on workshops and lightning talks presented by Docker CaptainsRegional workshops in French, Spanish and Portuguese by the community

Click here to register for the event and to view the detailed agenda.
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