So far, we have spent time making fake or mock container services that helped us build Docker skills, but we have not had a chance to work on something that resembles a real-world service. In general, most of the simpler services that get utilized out there will look something similar to what is shown in this high-level diagram:
![](https://static.packt-cdn.com/products/9781786469007/graphics/assets/5b130fee-4018-4a72-a1b9-d55ed0dc86d5.png)