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Learning Docker from Square One
Chloe Condon, a developer evangelist for Codefresh, introduces Docker concepts including images, containers, volumes, and Docker Compose. She emphasizes the distinction between Docker images as applications and containers as their running instances, likening images to DVDs and containers to DVD players. The presentation also covers practical aspects such as Dockerfiles, persistent data management, and resources for further learning.
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Learning Docker from Square One
- 1. Learning Docker From SquareOne Developer Evangelist, Codefresh Chloe Condon @chloecondon
- 3. Iām Whaley Glad Youāre Here!š³ Me at my last DockerCon!
- 4. Our Docker journeybeginsā¦ Hi, Iām Chloe!
- 7. Now a DeveloperEvangelist (Woo! Thanks Docker! š )
- 8. Letās Start Fromthe Very Beginning āA very good place to startā¦ā @chloecondon
- 9. Images & Containers ā¢Layers ā¢ DockerHub ā¢ Official Images ā¢ Tagging/Pushing ā¢ Dockerfiles Iāll Show You A Thing Or Two Aboutā¦ Volumes ā¢ Persistant data ā¢ Bind Mounting Docker Compose ā¢ yaml files ā¢ Compose commands ā¢ Building images @chloecondon
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- 11. Images & Containers Whatāsthe difference? š¤ @chloecondon
- 12. Letās Break itDownā¦ An image is an application youād like to run A container is a running instance of an image @chloecondon
- 13. Letās Break itDownā¦ An image is an application youād like to run A container is a running instance of an image @chloecondon
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- 15. Think of itthis wayā¦ Image = DVD š½ Container = DVD Player šŗ @chloecondon
- 16. Think of itthis wayā¦ Docker Image = The basis of a Docker container. Represents a full application. Container = The standard unit in which the application service resides and executes. @chloecondon
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- 20. So, a containeris a lightweight VM, right? @chloecondon
- 21. So, a containeris a lightweight VM, right? Think of VMs like a š”ā¦ ā¦and containers like an š¢ā¦ ā¦stay with me here! @chloecondon
- 22. So, a containeris a lightweight VM, right? @chloecondon
- 23. So, a containeris a lightweight VM, right? @chloecondon
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- 25. So, a containeris a lightweight VM, right? āDocker is not a virtualization technology, itās an application delivery technologyā -Mike Coleman @chloecondon
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- 38. Tagsā¦ whatās ina name? -Shakespeareā¦ jk @chloecondon
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- 42. Dockerfiles areā¦ ā¦instructionsā¦ ā¦that youneed to optimize! @chloecondon
- 43. Things to considerwith Dockerfiles Ephemeral ( unnecessary packages 1 container = 1 concern Minimal layers @chloecondon
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- 52. Volumes Data volumes aredesigned to persist data, independent of the containerās lifecycle. @chloecondon
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- 54. ā¢ Host Volumes dockerrun -v /path/on/host:/path/in/container ... ā¢ Anonymous Volumes docker run -v /path/in/container ... ā¢ Named Volumes docker volume create somevolumename docker run -v name:/path/in/container ... Volumes @chloecondon
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- 56. Docker Compose 1. Definewith a Dockerfile 2. Write a docker-compose.yml 3. Run docker-compose up @chloecondon
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- 58. Great Resources! ā¢ Playwith Docker ) ā¢ Bret Fisherās class on Udemy * ā¢ Docker Docs š³ ā¢ Anything from a Docker Captain! š¢ (docker.com/captains) ā¢ Codefresh š @chloecondon
- 59. Thank You! @chloecondon onmost things! My articles on Medium cover: ā¢ Docker Basics ā¢ Volumes ā¢ Tags ā¢ & much more! Come to my Hallway Track after this! Otherwise, Iāll be chilling in the foam pit!