01 - Introduction

Pros to Docker

Very few resources / saves money

• Isolate application from its environment

• Virtual machines do the same, but waste a lot of resources (e.g. vagrant)

• Docker shares common dependencies between multiple applications

• Server services are charged by computation. Using VMs requires lots of resources for your applications overhead

• Docker containers starts in milliseconds (~ 8 applications in 2 seconds)

Portability

• Getting applications working on a device can require lots of dependencies

• Application is stored inside a docker file, which is then executable on various machines

• A docker file is a controlled environment

Picking the right tool for the job

• No installation complications when trying new, not familiar technologies

• Installation of these tools is managed by docker

• Implementing micro-services for applications is much easier as each service can run in its own docker