← Back to Roadmap
✅ DevOps Level
Containerization & Docker
Complete Beginner → Advanced Syllabus (Pin-to-Pin)
🟢 LEVEL 1 — Containerization Basics
1. What is Containerization
- Application packaging
- Environment consistency
- Isolation benefits
- Container vs VM
2. Docker Introduction
- Docker architecture
- Docker daemon & client
- Container layers
- Registry concepts
🟢 LEVEL 2 — Docker Images
3. Dockerfile Basics
- FROM instruction
- RUN commands
- COPY vs ADD
- WORKDIR & ENV
4. Image Building
- Build context
- Layer caching
- Image optimization
- Tagging images
🟡 LEVEL 3 — Running Containers
5. Container Execution
- docker run command
- Port mapping
- Volume mounting
- Environment variables
6. Container Lifecycle
- Container states
- Start, stop, restart
- Health checks
- Signal handling
🟡 LEVEL 4 — Image Optimization
7. Multi-Stage Builds
- Build vs runtime images
- Reducing final size
- Separate concerns
- Stage targeting
8. Image Size Reduction
- Alpine base images
- Distroless images
- Layer consolidation
- Artifact pruning
🟠 LEVEL 5 — Networking
9. Container Networks
- Bridge networks
- Host networks
- Overlay networks
- Network drivers
10. Service Communication
- DNS resolution
- Container linking
- Network isolation
- Exposing ports
🟠 LEVEL 6 — Data Management
11. Volume Types
- Named volumes
- Bind mounts
- tmpfs mounts
- Volume drivers
12. Persistence Strategies
- Database containers
- Data backup
- Volume snapshots
- Cross-container sharing
🔵 LEVEL 7 — Docker Compose
13. Compose Fundamentals
- compose.yml structure
- Service definitions
- Networks & volumes
- Environment configuration
14. Multi-Container Orchestration
- Service dependencies
- Health checks in composition
- Override files
- Production considerations
🔵 LEVEL 8 — Security & Best Practices
15. Container Security
- Image scanning
- Non-root users
- Read-only filesystems
- Secret management
16. Production Best Practices
- Minimal base images
- Health checks
- Resource limits
- Logging strategy
🔴 LEVEL 9 — Advanced Patterns
17. Registry Management
- Docker Hub
- Private registries
- Image scanning
- Tag management
18. CI/CD Integration
- Automated builds
- Push to registry
- Version tagging
- Deployment pipelines
⭐ Senior Frontend Focus (Must Master)
- Containerizing frontend applications
- Multi-stage builds for frontend
- Nginx configuration in Docker
- Development versus production containers
- Environment variables for frontend secrets
- Health checks for frontend services
- Registry management for frontend artifacts