Docker: multi-stage multi-environment

Talk given on Unconference Track in LaraconEU 2018

Transcript

1. Docker: Multi-stage multi-environment Abdala Cerqueira
2. Dockerfile
3. FROM COPY --from= docker build --target
4. Problems
5. Problem 1 • Keep different Dockerfiles per environment • ! dev tools and dependencies on production
6. Problem 2 • Big, huge, immense images • One or two commands may leave images out of control
7. Dependencies
8. Checklist • Have only one Dockerfile • Use the same Dockerfile for all environments (dev, test, prod) • Create small images • Manage less dependencies
9. Official PHP image • One Dockerfile • All environments • Small images • Less dependencies Time: ~39s Size: 430MB Security problems
10. Multi-stage
11. Official PHP image multi-stage • One Dockerfile • All environments • Small images • Less dependencies Time: ~40s Size: 393MB Not that small, hidden dependencies
12. Alpine image • One Dockerfile • All environments • Small images • Less dependencies Time: ~11s Size: 59.4MB Still have unwanted dependencies
13. Alpine image multi-stage • One Dockerfile • All environments • Small images • Less dependencies Time: ~16s Size: 35.8MB This is ART <3
14. Comparison table Image Time Size alpine:3.8 - 4.41 MB php:7.2-apache - 377 MB laravel-apache 39s 430 MB laravel-apache-multi 40s 393 MB laravel-alpine 11s 59.4 MB laravel-alpine-multi 16s 35.8 MB
15. Conclusion • Care about dependencies • Try different techniques
16. Thanks!