Docker and Containerization

Lessons

1. 1

   What Containers Are and Why

   Free

   Explain containers vs VMs and why Docker is the default deploy format.

   Beginner·30 min
2. 2

   Docker Fundamentals

   Use docker run, ps, logs, exec, stop, rm confidently; distinguish images from containers.

   Beginner·40 min
3. 3

   Writing Dockerfiles

   Author Dockerfiles using FROM, COPY, RUN, WORKDIR, EXPOSE, CMD vs ENTRYPOINT; build and tag.

   Beginner·50 min
4. 4

   Docker Compose

   Define multi-container apps with networks, volumes, healthchecks, and depends_on.

   Intermediate·50 min
5. 5

   Docker Networking

   Use bridge networks, service-name DNS, port publishing, and debug container connectivity.

   Intermediate·40 min
6. 6

   Docker Volumes

   Use named volumes vs bind mounts correctly; back up persistent data.

   Intermediate·35 min
7. 7

   Docker in Development

   Replace local service installs with containers and use VS Code Dev Containers for reproducible setups.

   Intermediate·35 min
8. 8

   Docker Hub and Image Registries

   Push images to Docker Hub and GHCR; tag for clean rollbacks; sign + scan.

   Intermediate·35 min
9. 9

   Optimizing Docker Images

   Apply multi-stage builds, layer caching, image minimization, and security scanning.

   Intermediate·40 min
10. 10

    Running Real Applications in Docker

    Containerize Next.js + Python + Postgres behind a Caddy reverse proxy with Compose.

    Intermediate·60 min
11. 11

    Container Security

    Run as non-root, use read-only filesystems and dropped capabilities, keep secrets out of images, and scan.

    Intermediate·40 min
12. 12

    Passion Project: Deploy a Containerized App

    Containerize an existing project end-to-end and deploy it to a VPS with a custom domain + HTTPS.

    Advanced·180 min
13. 13

    Docker Job Readiness

    Translate Docker skills into resume bullets and interview answers.

    Beginner·30 min