LHS Episode #349: Docker Deep Dive

by Black Sparrow Media Episode #349 Duration: 01:03:07
LHS Episode #349: Docker Deep Dive

Hello and welcome to Episode 349 of Linux in the Ham Shack. In this episode, we take an in-depth look at the Docker containerization platform. We discuss all aspects of the project from how to install it to how to use it to where to get support when something goes awry. You can use docker to easily install and deploy applications, microservices, application stacks, scalable and resilient webapps and much more. We hope you enjoy our hopefully no-too-rambling look at the ease and power of Docker.

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Segment 1 (Deep Dive)

  • Docker

  • Components

  • Docker Engine

  • Docker Build

  • Docker Compose

  • Docker Desktop (Mac/Windows)

  • Concepts

  • Shares resources from the OS kernel.

  • Not meant to run a virtual machine but to perform a single task or computation. The container only lasts as long as the process/computation within it is active.

  • Installation

  • Do not use “sudo apt install docker” in your package manager.

  • https://lhs.fyi/ma (Ubuntu installation procedure)

  • Allow unprivileged users to run Docker

  • sudo usermod -a -G docker $USER

  • Useful Commands

  • docker run (spin up a Docker container)

  • -d (detached)

  • -i (interactive / map stdin to container)

  • -t (invoke psuedo terminal on run)

  • -p (map external port to container port)

  • -v (map external filesystem to container filesystem)

  • -e (assign env variable to container)

  • –network (specify container network options)

  • docker ps [-a] (see running [and ended] Docker containers)

  • docker rm (remove a container)

  • docker images (see installed images)

  • docker rmi (remove image)

  • docker pull (download an image)

  • docker exec (run a command inside a container)

  • docker attach (foreground detached container)

  • docker inspect (details dumped as JSON)

  • docker network ls (show container networks)

  • Docker Storage

  • /var/lib/docker/(aufs,containers,image,volumes)

  • docker volume create <data_volume>

  • -v data_volume:

  • -v : (bind mount existing data)

  • –mount type=<>,source=,target=<>

  • Resources

  • https://lhs.fyi/mb (chrip Docker image)

  • https://lhs.fyi/mc (SDRAngel Docker image)

  • https://lhs.fyi/md (YouTube Docker tutorial)

Segment 2 (Announcements & Feedback)

  • E-mail from Ian, NV4C