The Builder

The stone cannot know why the chisel cleaves it;

The iron cannot know why the fire scorches it.

When thy life is cleft and scorched,

when death and despair leap at thee,

Beat not thy breast and curse thy evil fate,

But thank the Builder for the trials that shape thee.

-- The Hammer Book of Tenets

A build server is a computer that handle creating builds of a product.

Software

There exist a number of software solutions to setup a build server.

Reference

Two years in a build team!

https://aras-p.info/blog/2019/03/08/Two-years-in-a-build-team/