Docker
/Intermediate
Build Performance
Definition
The overarching strategy of reducing the time it takes to execute `docker build`. Crucial in enterprise environments where developers build images dozens of times a day.
Explain Like I'm New
Making the chef cook faster so the developer doesn't sit around staring at a loading screen for 20 minutes every time they change a line of code.
Real World Example
A company's build takes 15 minutes. An engineer implements `.dockerignore` to stop sending massive log files to the daemon, switches to BuildKit for parallel execution, and properly orders the layers to utilize caching. The build time drops to 45 seconds.
Common Use Cases
- •Developer Experience (DX)
- •CI/CD Pipeline optimization
Interview Questions
basic
- Which file completely prevents useless data from being uploaded to the Docker Daemon, massively speeding up the start of the build?
intermediate
- What is Docker 'BuildKit' and how does it improve performance?