Docker Full Course — 10 Episodes with Labs and Interview Q&A

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This repository contains a 10-episode, hands-on Docker course with practical labs and interview preparation. Every episode directory includes:

• README.md (overview, objectives, quick start)
• LABS.md (exercises to practice)
• LABS-ANSWERS.md (solutions)
• INTERVIEW.md (questions)
• INTERVIEW-ANSWERS.md (answers)

Stay in the loop and get new labs + answers and interview content:

• Newsletter (free): https://learnwithdevopsengineer.beehiiv.com/subscribe
• YouTube channel: https://www.youtube.com/@learnwithdevopsengineer

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Episodes Overview

1. Episode 1 — Docker Setup and Basics

• Folder: EP1-docker-setup
• Video: https://youtu.be/yAx17O6lHbw
• Highlights: Install Docker, run first containers, images vs containers, core CLI (run, ps, logs, exec, stop, rm). Includes a bind-mount lab.
• Labs & Q&A: EP1-docker-setup/LABS.md, EP1-docker-setup/LABS-ANSWERS.md, EP1-docker-setup/INTERVIEW.md, EP1-docker-setup/INTERVIEW-ANSWERS.md

2. Episode 2 — Dockerizing a Flask App

• Folder: EP2-docker-flask
• Video: https://youtu.be/PaUmQzT0ocs
• Highlights: Build a minimal Flask image (Python slim), .dockerignore best practices, port mapping, image tagging.
• Labs & Q&A: EP2-docker-flask/LABS.md, EP2-docker-flask/LABS-ANSWERS.md, EP2-docker-flask/INTERVIEW.md, EP2-docker-flask/INTERVIEW-ANSWERS.md

3. Episode 3 — Docker Networking (Flask + Postgres)

• Folder: EP3-docker-networking
• Video: https://youtu.be/DPhumZerj8Y
• Highlights: User-defined bridge networks, container DNS names, when to publish ports, debugging connectivity.
• Labs & Q&A: EP3-docker-networking/LABS.md, EP3-docker-networking/LABS-ANSWERS.md, EP3-docker-networking/INTERVIEW.md, EP3-docker-networking/INTERVIEW-ANSWERS.md

4. Episode 4 — Persistent Volumes

• Folder: EP4-Persistent-Volumes
• Video: https://youtu.be/V2HumY93lrM
• Highlights: Ephemeral container storage vs persistence, named volumes, bind mounts, common pitfalls. See EP4-Persistent-Volumes/commands.sh for a walkthrough.
• Labs & Q&A: EP4-Persistent-Volumes/LABS.md, EP4-Persistent-Volumes/LABS-ANSWERS.md, EP4-Persistent-Volumes/INTERVIEW.md, EP4-Persistent-Volumes/INTERVIEW-ANSWERS.md

5. Episode 5 — Crash Loops and Configuration

• Folder: EP5-Crashloop
• Video: https://youtu.be/V2HumY93lrM
• Highlights: Reproduce/fix crashes due to missing env vars, restart policies, healthchecks, secure configuration and secrets.
• Labs & Q&A: EP5-Crashloop/LABS.md, EP5-Crashloop/LABS-ANSWERS.md, EP5-Crashloop/INTERVIEW.md, EP5-Crashloop/INTERVIEW-ANSWERS.md

6. Episode 6 — Docker Compose (Flask, Postgres, Nginx)

• Folder: EP6-Docker-compose
• Video: https://youtu.be/ErXm01G3sCc
• Highlights: Define/run multi-container apps, service networking, environment variables, volumes, healthchecks, scaling.
• Labs & Q&A: EP6-Docker-compose/LABS.md, EP6-Docker-compose/LABS-ANSWERS.md, EP6-Docker-compose/INTERVIEW.md, EP6-Docker-compose/INTERVIEW-ANSWERS.md

7. Episode 7 — Docker Image Optimization

• Folder: EP7-Image-optimization
• Video: https://youtu.be/HBoOJgwA4Co
• Highlights: Anti-patterns (bloated images), multi-stage builds, cache-friendly layering, .dockerignore, base image trade-offs.
• Labs & Q&A: EP7-Image-optimization/LABS.md, EP7-Image-optimization/LABS-ANSWERS.md, EP7-Image-optimization/INTERVIEW.md, EP7-Image-optimization/INTERVIEW-ANSWERS.md

8. Episode 8 — Container Security Basics

• Folder: EP8-Security
• Video: https://youtu.be/klbgi1d1UpY
• Highlights: Non-root users, dropping capabilities, read-only rootfs, minimizing exposure and image surface area.
• Labs & Q&A: EP8-Security/LABS.md, EP8-Security/LABS-ANSWERS.md, EP8-Security/INTERVIEW.md, EP8-Security/INTERVIEW-ANSWERS.md

9. Episode 9 — CI/CD with GitHub Actions (Build and Push)

• Folder: EP9-CICD
• Video: https://youtu.be/uTMAaF_yLfM
• Highlights: Build and push to Docker Hub on main. Workflow lives at EP9-CICD/.github/workflows/docker.yml. Secrets required: DOCKER_USERNAME, DOCKER_PASSWORD.
• Labs & Q&A: EP9-CICD/LABS.md, EP9-CICD/LABS-ANSWERS.md, EP9-CICD/INTERVIEW.md, EP9-CICD/INTERVIEW-ANSWERS.md

10. Episode 10 — Real-World Stack (Flask, Postgres, Nginx, cAdvisor)

• Folder: EP10-Real-world
• Video: https://youtu.be/nWiy6eaS5FU
• Highlights: Production-like stack with reverse proxy, DB persistence, env files, restart policies, basic monitoring via cAdvisor.
• Labs & Q&A: EP10-Real-world/LABS.md, EP10-Real-world/LABS-ANSWERS.md, EP10-Real-world/INTERVIEW.md, EP10-Real-world/INTERVIEW-ANSWERS.md

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Getting Started

• Pick an episode folder and follow its README.md for setup.
• Do the exercises in LABS.md; check your work with LABS-ANSWERS.md.
• Practice interview topics via INTERVIEW.md and INTERVIEW-ANSWERS.md.

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🧾 License & Usage

This repository is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).

You are free to:

• ✅ Use, modify, and share this project for personal learning or educational purposes.
• 🚫 Not allowed to use it for commercial, paid, or monetized activities without prior permission.

For commercial usage — including paid courses, internal company training, consulting, or resale —
please contact learnwithdevopsengineer07@gmail.com to obtain a commercial license.
See COMMERCIAL_LICENSE.txt for details.

Attribution Example:

Source: Learn With DevOps Engineer – Docker Home Lab Series
https://github.com/learnwithdevopsengineer3682/docker-home-lab-series.git
Licensed under CC BY-NC 4.0