1: History and Motivation
Examine the evolution of virtualization technologies from bare metal, virtual machines, and containers and the tradeoffs between them.
2: Technology Overview
Explores the three core Linux features that enable containers to function (cgroups, namespaces, and union filesystems), as well as the architecture of the Docker components.
3: Installation and Set Up
Install and configure Docker Desktop
4: Using 3rd Party Container Images
Use publicly available container images in your developer workflows and learn how about container data persistence.
5: Example Web Application
Building out a realistic microservice application to containerize.
6: Building Container Images
Write and optimize Dockerfiles and build container images for the components of the example web app.
7: Container Registries
Use container registries such as Dockerhub to share and distribute container images.
8: Running Containers
Use Docker and Docker Compose to run the containerized application from Module 5.
9: Container Security
Learn best practices for container image and container runtime security.
10: Interacting with Docker Objects
Explore how to use Docker to interact with containers, container images, volumes, and networks.
11: Development Workflow
Add tooling and configuration to enable improved developer experience when working with containers.
•Developer Experience Wishlist
12: Deploying Containers
Deploy containerized applications to production using a variety of approaches.
Interacting with Docker Containers
Throughout the course we have interacted with many different Docker objects. This module covers the additional options for how we can work with them.
Use docker image --help to see all the subcommands associated with Docker image.
Commands
Build
Build an image from a Dockerfile:
docker image build -t new-image .
# equivalent
docker build -t new-image .
History
Show the steps used to build an image:
docker image history new-image
Inspect
Show detailed information about an image:
docker image inspect new-image
Import
Create an image from a tarball:
docker image import file.tar
Load
Create an image from a tar archive generated using docker save:
docker image load -i file.tar
List
List all images on the system:
docker image ls
Prune
Clean up old images:
docker image prune
Pull
Pull an image from a registry:
docker image pull image-name:tag
Push
Push built images to a registry:
docker image push image-name:tag
Remove
Remove a specific image:
docker image rm new-image
Save
Save an image to a tar archive:
docker image save -o file.tar image-name:tag
Tag
Tag an image with a new tag:
docker image tag ubuntu:22.04 my-ubuntu-image
Scan
Scan an image for known vulnerabilities:
docker scan ubuntu:22.04
NOTE: docker scan has been deprecated in favor of docker scout https://docs.docker.com/scout/
docker scout cves ubuntu:22.04