Intermediate Docker Commands

Intermediate Docker

Mike Metzger

Data Engineering Consultant

Docker refresher

• Docker is a container runtime
• Is designed to run and manage various containerized applications on Windows, Mac, and Linux
• Can run containers using pre-built images, or create our own
• Dockerfiles are text files used to Docker container images
• Containers are instances of a given Docker image

The DataCamp Introduction to Docker course is a pre-requisite to this course

Docker commands

• docker run
• docker stop
• docker build

• docker --help
  • Provides a list of potential Docker commands
• docker COMMAND --help
  • docker run --help
    • Provides options for the docker run command

Temporary containers

• Docker containers are usually created with docker run
• Containers remain even after stopping / exiting
• Often want to run a container instance and remove it immediately upon exit
  • Development
  • Testing
  • Scripts

• docker run --rm
  • docker run --rm alpine:latest /bin/sh
• Referenced as 'clean-up' or 'remove'

docker ps

• Used for determining name, id, status, and other attributes of containers on a given machine running Docker
• Use the -a flag to get more information about existing containers
  • docker ps -a
• Will cover how to get extremely detailed information about containers later in the course

Let's practice!

Intermediate Docker