Docker packages an application and everything it needs to run into a single image, then runs that image as an isolated process on any Linux host. Solomon Hykes released the open-source version in 2013; within five years it had reshaped how software is shipped — local development, CI builds, production deploys, and most cloud-native architecture all assume containers exist.
The day-to-day Docker skill set is practical: writing minimal Dockerfiles, using multi-stage builds to ship small images, composing multi-service local stacks with Docker Compose, debugging running containers with docker exec, and understanding how networks, volumes, and bind mounts actually work under the hood.
What you'll work with in these 24 courses
- Dockerfile authoring: layers, caching, multi-stage builds, slim base images
- Docker Compose for local multi-service development
- Container networking: bridge, host, overlay, port mapping
- Volumes, bind mounts, Docker storage drivers
- Image registries: Docker Hub, GitHub Container Registry, AWS ECR, GCP Artifact Registry
- Production patterns: healthchecks, init systems, signal handling, logging
