Service Decomposition

This chapter will cover how to take the knowledge from the previous chapter and use it to create and build an addition of a database and an application server container, since real-world services are usually composed in such a way. Once we get them all built up, we will see what is needed in order to group them together into a more usable service and cover even of more Docker under the hood.

In this chapter, we will cover the following topics:

• A quick review of Docker commands
• Writing a real service with:
  
  • A web server service
  • An application service
  • A database
• Introducing volumes
• Security considerations for credential passing