Docker Zero to Hero - From Beginner to Professional

Mục Tiêu Series

Tìm hiểu Docker từ cơ bản đến nâng cao, từ việc chạy container đơn giản đến xây dựng và triển khai hệ thống microservices phức tạp trên production.

Danh Sách Bài Học

Part 1: Docker Fundamentals (Zero to Beginner)

1. Introduction to Docker & Containerization

Containerization là gì?
Docker vs Virtual Machines
Benefits của Docker
Docker use cases
Docker architecture overview
Docker Desktop vs Docker Engine
When to use Docker

2. Installing Docker

Docker Desktop installation (Windows, macOS, Linux)
Docker Engine installation (Linux servers)
Docker account setup
Verify installation
Docker CLI basics
Docker Desktop UI overview
System requirements

3. Docker Images Fundamentals

Images vs Containers
Docker Hub introduction
Pulling images (docker pull)
Listing images (docker images)
Image tags và versions
Official vs community images
Image naming conventions
Removing images (docker rmi)

4. Running Your First Containers

docker run command
Container lifecycle
Running interactive containers (-it flag)
Detached mode (-d flag)
Naming containers (--name)
Port mapping (-p flag)
Listing containers (docker ps)
Stopping containers (docker stop)
Removing containers (docker rm)

5. Working with Containers

Container logs (docker logs)
Following logs (-f flag)
Executing commands in containers (docker exec)
Interactive shell access
Copying files (docker cp)
Container inspection (docker inspect)
Container stats (docker stats)
Restarting containers

6. Container Networking Basics

Default bridge network
Port publishing (-p vs -P)
Container-to-container communication
Network inspection
DNS resolution
Host networking
None network

7. Data Persistence with Volumes

Container filesystem
Volume concepts
Creating volumes (docker volume create)
Named volumes vs anonymous volumes
Bind mounts
Volume mounting (-v vs --mount)
Volume inspection
Volume cleanup

Part 2: Building Custom Images (Beginner to Intermediate)

8. Dockerfile Basics

Dockerfile syntax
FROM instruction
RUN instruction
COPY vs ADD
WORKDIR instruction
CMD instruction
Building images (docker build)
Image tagging
.dockerignore file

9. Dockerfile Best Practices

Layer caching
Multi-line RUN commands
Combining RUN instructions
Order of instructions
Minimizing layers
Using specific base images
Cleaning up in same layer
Security considerations

10. Advanced Dockerfile Instructions

ENV variables
ARG vs ENV
EXPOSE instruction
VOLUME instruction
USER instruction
LABEL metadata
HEALTHCHECK instruction
ONBUILD instruction
SHELL instruction

11. Multi-Stage Builds

Multi-stage build concepts
Build stage naming
Copying artifacts between stages
Reducing image size
Separating build và runtime dependencies
Real-world examples (Node.js, Go, Java)
Build targets
Advanced patterns

12. Image Optimization

Base image selection
Alpine Linux images
Distroless images
Image size reduction techniques
Layer optimization
Build cache optimization
Security scanning
Image best practices

Part 3: Docker Compose (Intermediate)

13. Docker Compose Introduction

Docker Compose overview
Install Docker Compose
docker-compose.yml structure
YAML syntax basics
Version differences
Compose vs docker run
Use cases

14. Compose File Fundamentals

Services definition
Image vs build
Container naming
Port mapping
Environment variables
Volume mounting
Networks
Dependencies (depends_on)

15. Multi-Container Applications

Web + Database setup
Service communication
Environment configuration
Shared volumes
Network isolation
Health checks
Startup order
Real examples (WordPress, MEAN stack)

16. Docker Compose Commands

docker-compose up/down
Starting/stopping services
Building services
Viewing logs
Executing commands
Scaling services
Service management
Compose profiles

17. Advanced Compose Features

Extension fields
Multiple compose files
Override files
Variable substitution
.env files
Secrets management
Configs
Deploy configuration
Resource limits

Part 4: Docker Networking (Intermediate to Advanced)

18. Docker Networks Deep Dive

Network drivers overview
Bridge networks
Host networks
Overlay networks
Macvlan networks
Custom networks
Network scopes

19. Creating Custom Networks

Creating bridge networks
Network configuration
Subnet và IP range
Gateway configuration
DNS configuration
Connecting containers
Network aliases
Multi-network containers

20. Service Discovery

DNS-based discovery
Container linking (legacy)
Docker DNS server
Network aliases
Service mesh introduction
Load balancing basics
Health-based routing

21. Network Security

Network isolation
Internal networks
Firewall rules
Network policies
Encrypted networks
Security best practices
Network troubleshooting

Part 5: Data Management (Intermediate to Advanced)

22. Volume Drivers

Local volume driver
NFS volumes
Cloud volume drivers
Third-party drivers
Volume plugins
Distributed storage
Backup strategies

23. Backup & Restore

Volume backup strategies
Container data export
Database backups in containers
Automated backup solutions
Disaster recovery
Migration strategies
Testing backups

24. StatefulSets & Persistent Data

Stateless vs stateful applications
Database containers
Data initialization
Volume permissions
Data replication
Backup automation
Production considerations

Part 6: Docker Security (Advanced)

25. Container Security Fundamentals

Security threats
Container isolation
Linux capabilities
Seccomp profiles
AppArmor/SELinux
Read-only filesystems
Drop privileges

26. Image Security

Vulnerability scanning
Docker Security Scanning
Trivy, Clair, Anchore
Base image selection
Minimal images
Signing images
Private registries
Content trust

27. Runtime Security

Resource limits
User namespaces
Rootless Docker
Security contexts
Secrets management
Environment variables security
Audit logging
Security monitoring

28. Docker Bench Security

Docker Bench for Security
CIS benchmarks
Security hardening
Compliance checking
Automated auditing
Remediation strategies

Part 7: Docker in Production (Advanced)

29. Production Best Practices

12-factor app principles
Image tagging strategies
Rolling updates
Zero-downtime deployment
Health checks
Logging strategies
Monitoring setup
Alerting

30. Docker Swarm Basics

Swarm mode overview
Initializing swarm
Manager vs worker nodes
Services vs containers
Replicas và scaling
Load balancing
Service discovery
Rolling updates

31. Docker Swarm Advanced

Stack deployment
Secrets management
Configs management
Placement constraints
Update strategies
Network encryption
High availability
Production deployment

32. Container Orchestration Introduction

Orchestration overview
Docker Swarm vs Kubernetes
When to use orchestration
Migration strategies
Kubernetes basics
ECS, ACS overview
Choosing orchestrator

Part 8: CI/CD with Docker (Advanced)

33. Docker in CI/CD Pipelines

CI/CD concepts
Docker in build process
Testing in containers
Docker as build environment
Multi-stage builds for CI
Artifact management
Build optimization

34. GitLab CI with Docker

GitLab Runner setup
.gitlab-ci.yml configuration
Docker executor
Building images in CI
Running tests
Pushing to registry
Deployment automation

35. GitHub Actions with Docker

GitHub Actions basics
Docker actions
Building và pushing images
Multi-platform builds
Cache optimization
Security scanning
Deployment workflows

36. Jenkins & Docker

Jenkins installation
Docker plugin
Pipeline as code
Building images
Running tests
Docker agents
Deployment pipelines

Part 9: Docker Registry & Distribution (Advanced)

37. Docker Hub

Docker Hub features
Public vs private repos
Automated builds
Webhooks
Organizations
Team management
Rate limiting

38. Private Docker Registry

Registry deployment
Authentication setup
TLS configuration
Storage drivers
Garbage collection
High availability
Security hardening

39. Harbor Registry

Harbor introduction
Installation
Image replication
Vulnerability scanning
RBAC
Helm charts
Integration with CI/CD

40. Distribution Strategies

Multi-registry setup
Image promotion
Geo-distributed registries
Caching strategies
CDN integration
Bandwidth optimization

Part 10: Advanced Topics (Hero Level)

41. Docker BuildKit

BuildKit introduction
Enabling BuildKit
Build secrets
SSH forwarding
Cache mounts
Build output
Custom builders
Performance optimization

42. Docker Buildx

Buildx plugin
Multi-platform builds
Cross-compilation
Builder instances
Remote builders
Build attestation
SBOM generation

43. Container Resource Management

CPU limits và reservation
Memory limits
Disk I/O limits
Network bandwidth
PID limits
OOM killer
cgroups
Resource monitoring

44. Docker Plugins

Plugin architecture
Volume plugins
Network plugins
Authorization plugins
Logging plugins
Installing plugins
Creating custom plugins

45. Docker API

Docker API overview
REST API basics
SDK usage (Python, Go)
Remote API access
TLS configuration
API versioning
Automation scripts

46. Docker Internals

Container technology
Namespaces
Cgroups
Union filesystems
Overlay2
Container runtime (containerd, runc)
OCI standards
Image layers

47. Troubleshooting Docker

Common issues
Debugging techniques
Log analysis
Network troubleshooting
Performance issues
Disk space problems
Build failures
Container crashes

48. Docker Performance Optimization

Image optimization
Build performance
Runtime performance
Network optimization
Storage performance
Monitoring tools
Profiling
Benchmarking

Part 11: Real-World Projects (Hero Level)

49. Project 1: Microservices Application

Full-Stack Application with Docker

Frontend (React)
Backend API (Node.js/Python/Go)
Database (PostgreSQL)
Cache (Redis)
Message Queue (RabbitMQ)
Reverse Proxy (Nginx)
docker-compose setup
Production deployment

50. Project 2: CI/CD Pipeline

Complete DevOps Pipeline

Git repository
Automated testing
Docker image building
Security scanning
Multi-stage deployment
Monitoring setup
Rollback strategies

51. Project 3: Multi-Environment Setup

Dev, Staging, Production

Environment-specific configs
Secret management
Database migrations
Blue-green deployment
Monitoring và logging
Backup automation

52. Project 4: Docker Swarm Cluster

Production Cluster Setup

Multi-node cluster
Load balancing
Service discovery
Rolling updates
Health monitoring
Disaster recovery

Prerequisites

✅ Basic Linux command line knowledge
✅ Understanding of web applications
✅ Programming experience (any language)
📝 Git basics (helpful but not required)
📝 Networking basics (helpful)

Thời Gian Học

Ước tính: 8-10 tuần
Part 1-2 (Fundamentals): 2 tuần
Part 3-5 (Intermediate): 2-3 tuần
Part 6-8 (Advanced): 2-3 tuần
Part 9-11 (Hero Level): 2 tuần
Thực hành: 3-4 giờ/ngày
Total lessons: 52 bài học

Learning Path

ZERO (Week 1-2)  ↓  Docker Basics  Images & Containers  ↓BEGINNER (Week 3-4)  ↓  Dockerfile  Multi-Stage Builds  Docker Compose  ↓INTERMEDIATE (Week 5-6)  ↓  Networking  Volumes  Security Basics  ↓ADVANCED (Week 7-8)  ↓  Production Setup  Docker Swarm  CI/CD Integration  ↓HERO (Week 9-10)  ↓  Orchestration  Performance Tuning  Real Projects  ↓DOCKER EXPERT 🚀

Tools & Technologies

Required:

Docker Desktop / Docker Engine
Text editor (VS Code recommended)
Terminal/Command line
Git

Will Learn:

Docker CLI
Docker Compose
Docker Swarm
GitLab CI / GitHub Actions
Harbor Registry
Various databases (PostgreSQL, MySQL, MongoDB, Redis)
Web servers (Nginx, Apache)
Programming frameworks (Node.js, Python, Go)

Certification Path

After completing this course, you'll be prepared for:

Docker Certified Associate (DCA)
Certified Kubernetes Administrator (CKA) - foundation
AWS Certified DevOps Engineer

Projects Overview

11 Hands-on Projects:

Simple Web App (Nginx + HTML)
LAMP Stack (Linux, Apache, MySQL, PHP)
MEAN Stack (MongoDB, Express, Angular, Node)
WordPress Blog (WordPress + MySQL)
Python Web App (Django/Flask + PostgreSQL)
Node.js API (Express + MongoDB)
Go Microservice (Go + Redis)
Full Microservices (Multi-service architecture)
CI/CD Pipeline (Automated deployment)
Multi-Environment Setup (Dev/Staging/Prod)
Docker Swarm Cluster (Production cluster)

Tài Nguyên Tham Khảo

Official Documentation:

Books:

Docker Deep Dive by Nigel Poulton
Docker in Action by Jeff Nickoloff
The Docker Book by James Turnbull

Online Resources:

Video Courses:

Docker Mastery on Udemy
Docker for Developers (Pluralsight)
Docker Deep Dive (A Cloud Guru)

Bài Tập

Mỗi bài học bao gồm:

📖 Theory: Concepts và best practices
💻 Lab Exercises: 3-5 hands-on labs
🔨 Mini Projects: Build real applications
📝 Quiz: 10-15 questions
🎯 Challenge: Advanced exercises
🐛 Troubleshooting: Debug exercises

Kết Quả Sau Khóa Học

✅ Kiến Thức:

Level 1 - Fundamentals:

✅ Hiểu containerization concepts
✅ Run và manage containers
✅ Work with Docker images
✅ Basic networking và volumes

Level 2 - Intermediate:

✅ Write Dockerfile efficiently
✅ Multi-stage builds
✅ Docker Compose mastery
✅ Custom networks
✅ Data persistence strategies

Level 3 - Advanced:

✅ Container security
✅ Production deployment
✅ Docker Swarm orchestration
✅ CI/CD integration
✅ Private registry setup

Level 4 - Hero:

✅ Performance optimization
✅ Microservices architecture
✅ Advanced troubleshooting
✅ Custom plugins
✅ Docker API automation

🚀 Kỹ Năng:

Development:
- Containerize any application
- Multi-container architecture
- Development environments
- Local testing setup
DevOps:
- CI/CD pipeline setup
- Automated deployments
- Infrastructure as Code
- GitOps workflows
Production:
- Production deployment
- High availability setup
- Monitoring và logging
- Security hardening
- Disaster recovery
Architecture:
- Microservices design
- Service mesh basics
- Container orchestration
- Cloud-native applications

💼 Career Opportunities:

Sau khóa học, bạn có thể làm:

Docker Engineer
DevOps Engineer
Cloud Engineer
Site Reliability Engineer (SRE)
Platform Engineer
Container Specialist
Kubernetes Engineer (với thêm K8s knowledge)

📊 Salary Range (Vietnam):

Junior Docker Engineer: 15-25M VND/month
Mid-level DevOps (Docker): 25-40M VND/month
Senior DevOps/SRE: 40-80M VND/month
Lead Platform Engineer: 80M+ VND/month

Module Tiếp Theo

Option 1: Kubernetes Zero to Hero

Container orchestration at scale
K8s architecture
Deployments, Services, Ingress
Helm charts
Production K8s

Option 2: CI/CD Mastery

Jenkins advanced
GitLab CI/CD
GitHub Actions
ArgoCD
Tekton

Option 3: Cloud Platforms with Docker

AWS ECS, EKS
Google Cloud Run, GKE
Azure Container Instances, AKS
Multi-cloud strategies

Option 4: Microservices Architecture

Service design patterns
API Gateway
Service mesh (Istio, Linkerd)
Distributed tracing
Observability

Tips Để Thành Công

Practice Daily - Chạy containers mỗi ngày
Build Projects - Containerize your own apps
Read Docs - Docker docs are excellent
Join Community - Docker forums, Slack channels
Experiment - Break things and learn
Optimize - Always improve your Dockerfiles
Security First - Never compromise on security
Stay Updated - Docker evolves quickly
Teach Others - Best way to solidify knowledge
Certify - Get Docker Certified Associate

Course Structure

Theory vs Practice Ratio:

📚 Theory: 30%
💻 Hands-on Labs: 50%
🎯 Projects: 20%

Assessment Methods:

✅ Quizzes after each section
✅ Hands-on lab completion
✅ Mini project submissions
✅ Final capstone project
✅ Mock DCA exam

Support:

💬 Discussion forum
📧 Email support
🎥 Video demonstrations
📝 Detailed documentation
👥 Study groups

Ready to become a Docker Hero? Let's containerize everything! 🐳🚀

"Build, Ship, and Run Any App, Anywhere" - Docker Motto

#devops

Docker Zero to Hero - From Beginner to Professional