Docker Intro and Week 19 Roadmap

What is Docker

What are Docker containers?

Docker containers

• containers are isolated
• containers are ephemeral
• containers are lightweight
• containers are reproducible

Docker containers

• containers are isolated
  • cannot interact with the rest of your computer, or other containers (except in specific ways)
• containers are ephemeral
  • you make them when you need one, and you can get rid of them when you're done
• containers are lightweight
  • single-purpose, only contain what they need
• containers are reproducible
  • make the same container over and over again

Who and what is it useful for?

Many things…

• Collaboration
• Trying out new tools
• DevOps
• Scientists
• Deploying a website!

Docker topics

• Setup and practice navigating inside a container (today)
• Docker containers (Tuesday)
• Docker Images and Dockerfiles (Wednesday)
• Docker-compose (Thursday)
• Microservices (Optional)

Today

• set up Docker
• explore alpine linux
  • a minimal linux distribution
• in this project
  • no direct access to your computer's file system
  • interactions through the command line

Docker containers (Tuesday)

• a docker container is a lightweight package which contains all the software and dependencies to run a single process
• we'll explore containers & use the command line interface to work with them

Docker images (Wednesday)

• docker images are templates for building docker containers
• allows you to make the same containers over and over
• you can customize an image using a Dockerfile

Docker-compose (Thursday)

• easily spin up a collection of containers, and configure them to communicate with one another

Friday

• multi-threading demo
• walkthrough the project skeleton
• group project planning

Today's itinerary [1/2]

Docker introduction:

• Watch this video, which is also listed under lecture for tomorrow: 12-minute Docker Overview
• Non Technical Overview of Docker (reading)

Docker installation (if docker is not already installed):

• Docker Installation (reading)
  • If you want to test your installation:
  • docker container run --rm hello-world

Today's itinerary [2/2]

Docker project:

• Installing Packages on Alpine Linux (video)
• Notes for Installing Packages on Alpine Linux (reading)
• Linux Basics (reading)
• Trying Out Alpine Linux (project)