Docker: Form Idea to Dev

Part 1 of 3 part series of webinars on Docker for CloudAcademy. You can read the summary (with link to video) on the CloudAcademy blog: http://cloudacademy.com/blog/docker-containers-how-they-work/

Transcript

1. Docker: From Idea to Dev
   cloudacademy.com
   

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2. Plan
   My Goal: Familiarize you with Docker so you can start today
   Presentation & Demo
   ~10 minutes for Q & A. Please put your questions in the chat.
   

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3. Hi! I’m Adam Hawkins
   • Site Reliability Engineering Team Lead at Saltside
   
   • Manages ~350 containers in production
   
   • 2+ years of Docker experience
   
   • “Introduction to Docker” course lecturer
   
   • @adman65
   
   • http://blog.slashdeploy.com
   

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4. Docker & Friends
   

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5. ”Docker containers wrap a piece of software in a complete filesystem that
   contains everything needed to run: code, runtime, system tools, system
   libraries – anything that can be installed on a server. This guarantees that
   the software will always run the same, regardless of its environment.”
   Docker Inc. (2016)
   

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6. Use Cases
   Build
   Ship & Run
   • Development Environment Automation
   • Managing Data Stores
   • Cross OS Development
   • Development & Production Parity
   

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7. Use Cases
   Build
   Ship & Run
   • Infrastructure Standardization
   • CI Build Isolation
   • Testing New Software
   • Distributing New Software
   

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8. Right, But what is it?
   • Built on top of Linux kernel features like control groups
   • Isolates process and their resources from others running on a
   single kernel
   • Not “light weight” virtualization as often described. This is
   inaccurate
   

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9. Containers vs VMs
   Credit: docker.com
   

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10. The Docker Flow
    

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11. Build, Ship, Run
    $ docker build -t my_org/my_app .
    $ docker push my_org/my_app
    $ docker run my_org/my_app
    

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13. The Official Registry & Library
    • Default place to push & pull images (customizable)
    • Tons of useful base images in the official library!
    • Covers 90% of common use cases
    • User contributed images cover the remaining 10%
    • Odds are there is a base image for your language (Python, Ruby,
    Node, Java, Go, and more)
    • Also images for data stores (Redis, MySQL, MongoDB, and more)
    

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14. Docker Compose
    • Models multi container applications through
    a configuration file
    • Great for development and testing
    • Can even be used to deploy to staging/
    production
    

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15. Docker Machine
    • Creates Docker hosts
    • Can create local VMs
    • Can create cloud instances on AWS/Azures/
    etc
    • Can even create Docker swarms
    

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16. Demo Time!
    Build a docker image and start a container
    Play with docker compose
    Show off misc features/commands
    

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17. Demo Time!
    cloudacademy.com
    

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18. Question Time
    cloudacademy.com
    

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19. Thank you!
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    https:/
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