Dock Introduction¶

What is docker¶

• Docker is a software development platform to deploy apps
• Apps are packaged in containers that can be run on any OS
• Apps run the same, regardless of where they're run
  • Any machine
  • No compatibility issues
  • Predictable behavior
  • Less work
  • Easier to maintain and deploy
  • Works with any language, any OS, any technology
• Use cases: microservices architecture, lift-and-shift apps from on-premises to AWS cloud, ...

Where are Docker images stored?¶

• Docker images are stored in repositories
  • Docker Hub (https://hub.docker.com)
    • public repository
    • find base images for many technologies or OS (e.g. ubuntu, mysql)
  • Amazon ECR (Amazon Elastic Container Registry)
    • private repository
    • public repository (Amazon ECR Public Gallery https://gallery.ecr.aws)

Docker vs Virtual Machines¶

• Docker is "sort of" a virtualization technology, but not exactly
• Resources are shared with the host to many containers on one server

Docker Containers Management on AWS¶

• Amazon Elastic Container Service (Amazon ECS)
  • Amazon's own container platform
• Amazon Elastic Kubernetes Service (Amazon EKS)
  • Amazon's managed Kubernetes (Open Source)
• AWS Fargate
  • Amazon's own serverless container platform
  • Works with ECS and with EKS
• Amazon ECR:
  • Store container images