Advanced Docker Training Course

Introduction

• Overview of advanced Docker concepts and operational workflows
• Recap of containerization principles and applicable use cases
• Key Docker terminology and core components
• Course objectives and an introduction to the hands-on environment

Docker Features and Architecture Overview

• The Docker Engine and its constituent parts
• Docker client, daemon, images, containers, and registries
• Docker architecture and the container lifecycle
• Utilizing Docker Hub and private registries
• Advanced Docker CLI fundamentals
• Resource and configuration management within Docker

Docker Setup

• Installation of Docker Community Edition
• Configuration of the Docker environment
• Verification of Docker installation status
• Configuring Docker for development and testing purposes
• Managing Docker configuration files and storage
• Initial steps in Docker environment troubleshooting

Creating Custom Docker Images

• Understanding Docker images and their layered structure
• Writing efficient Dockerfiles
• Dockerfile instructions and industry best practices
• Managing the build context
• Building and tagging images effectively
• Utilizing .dockerignore
• Optimizing image size and build performance
• Managing image versions and tagging strategies
• Implementing multi-stage Docker builds
• Publishing images to a container registry

Running Multi-Container Applications with Docker Compose

• Introduction to Docker Compose
• Defining services using Compose files
• Configuring networks and volumes
• Managing environment variables
• Handling service dependencies and startup order
• Running and scaling multiple services
• Building application images via Compose
• Managing application configuration files
• Debugging multi-container applications
• Docker Compose best practices

Challenges in Deploying Multiple Docker Applications

• Managing containers across multiple hosts
• Ensuring application scaling and high availability
• Implementing service discovery
• Configuring load balancing
• Managing configuration and secrets
• Addressing persistent storage challenges
• Monitoring and logging at scale
• Executing rolling updates and application deployments
• Recovering from container and host failures

Maintaining Control Through Container Orchestration

• Introduction to container orchestration concepts
• Benefits and limitations of orchestration
• Comparison of Docker Swarm, Kubernetes, and other solutions
• Scheduling and workload management
• Service discovery and networking strategies
• Scaling and self-healing applications
• Managing rolling deployments and rollbacks
• Resource management and workload isolation
• Selecting the appropriate orchestration platform

Kubernetes in Practice

• Kubernetes architecture and core components
• Understanding Pods, nodes, and clusters
• Deployments and ReplicaSets
• Services and service discovery mechanisms
• ConfigMaps and Secrets
• Namespaces and resource organization
• Scaling applications effectively
• Managing rolling updates and rollbacks
• Kubernetes networking fundamentals
• Persistent storage solutions
• Health checks and application resilience
• Deploying Docker applications to Kubernetes
• Troubleshooting Kubernetes workloads

Advanced Docker Networking

• Docker networking architecture
• Bridge, host, overlay, and other network drivers
• Container-to-container communication
• Communication between containers and external systems
• Creating custom Docker networks
• Implementing network isolation
• Service discovery mechanisms
• Port publishing and exposure strategies
• Networking in multi-host environments
• Troubleshooting Docker networking issues

Docker Security

• Docker security fundamentals
• Container isolation and security boundaries
• Running containers with appropriate privilege levels
• Managing users and permissions within containers
• Linux capabilities and security controls
• Securing Docker images
• Image vulnerability scanning
• Secure secret management
• Securing Docker registries
• Network security and isolation strategies
• Docker daemon security hardening
• Container security best practices

Establishing Continuous Integration for Docker

• Introduction to CI for containerized applications
• Automating Docker image builds
• Automated testing of Docker images and containers
• Image tagging and version control
• Integrating source control with Docker builds
• Automated image vulnerability scanning
• Publishing images to registries
• Managing build artifacts
• Implementing automated quality checks
• Designing repeatable Docker CI pipelines

Integrating Docker into Existing Workflows

• Integrating Docker with current development workflows
• Containerizing legacy applications
• Integrating Docker with CI/CD platforms
• Managing development, testing, staging, and production environments
• Automated deployment strategies
• Configuration management across environments
• Registry integration
• Deployment approvals and release management
• Monitoring application deployments
• Maintaining consistency across all environments

Container and Orchestration Best Practices

• Designing maintainable Docker images
• Optimizing container startup and performance
• Container lifecycle management
• Effective resource allocation
• Logging and monitoring strategies
• Configuration and secret management
• Ensuring high availability and fault tolerance
• Scaling containerized applications
• Secure container deployment practices
• Versioning and release strategies
• Orchestration architecture best practices

Troubleshooting

• Diagnosing container startup failures
• Analyzing application and container logs
• Inspecting containers and images
• Troubleshooting networking issues
• Resolving storage and volume problems
• Diagnosing image build failures
• Troubleshooting Docker Compose applications
• Investigating resource and performance issues
• Kubernetes troubleshooting fundamentals
• Practical troubleshooting exercises

Summary and Conclusion

• Review of key Docker concepts
• Recap of image creation and container management
• Review of multi-container application deployment
• Review of orchestration concepts and Kubernetes
• Review of Docker networking and security
• Review of CI/CD integration
• Containerization and orchestration best practices
• Final hands-on exercise
• Open questions and discussion