freeCodeCamp's Learn DevOps Basics: Free Docker Course teaches Docker, the containerization platform that packages applications with their dependencies so they run anywhere. You learn Docker images, containers, and how to write Dockerfiles in 2 hours. The entire course is free on freeCodeCamp.org. After finishing, you understand how containers work and can containerize applications. Docker is essential DevOps knowledge used in nearly every modern deployment. The main limitation: 2 hours is an overview. Real containerization for production requires more depth and practice with orchestration (Kubernetes).
Docker is used in 62% of organizations running containers, and container adoption is over 90% in enterprise (source: Cloud Native Computing Foundation surveys).
About This Course
freeCodeCamp's 2-hour Docker course covering containers, images, volumes, networks, Docker Compose, and writing Dockerfiles. Practical and project-driven — by the end you can containerise real applications. Free on YouTube.
Course Details
Frequently Asked Questions
Is freeCodeCamp's Docker course free?
Yes, completely free, 2 hours on freeCodeCamp.org.
Do I need DevOps experience?
No. The course starts from zero. Docker concepts are universal regardless of your backend language.
What's a Docker image vs. a container?
A Docker image is a blueprint (like a class); a container is a running instance (like an object). You write an image, then run containers from it.
After this, should I learn Kubernetes?
If you're managing many containers in production, yes. For single servers or small deployments, Docker alone is sufficient.
Can I dockerize any application?
Mostly, yes. Write a Dockerfile describing how to build and run your app, then docker build and docker run.
More devops Courses
freeCodeCamp's full Kubernetes course covering pods, deployments, services, ingress, ConfigMaps, secrets, and Helm. Builds on a basic Docker foundation. Free and project-based.