如何配置Gitlab CI码头工人以测试不同的需求（语言环境，数据库等）？

Question

I am creating an API that uses Python, Mongo, and Redis and I wanted to use Gitlab CI.

Do I have to build a Dockerfile with all these requirements? Or is there a way to just write some instructions in the .gitlab-ci.yml and call the different images in Dockerhub?

Answer 1

Yes you should. Although this is not a Gitlab specific question (and thus answer) it is considered a best-practice to separate tasks and functions (in Docker terms; One concern per container). I don't want to call it a micro-service approach but you should consider splitting all processes.

Some fundamental concepts to help you:

• The Twelve-Factor App (Splitting processes )
• Best practices for writing Dockerfiles ( One concern )

Since you mention Python and API I suppose your application is writen in Python and you use MongoDB and Redis as persistent data stores?

Take a look at the official Docker images and how to use them, this should make your life splitting concerns a lot easier:

• MongoDB
• Redis

There is also an official Python image to help you on your way. Just add your app code and get going!

Answer 2

I found that you can write in a .gitlab-ci.yml a tag:

- services: - redis:4.0.2 - mongo:3.4.10

Which uses other services that are on Dockerhub.

https://docs.gitlab.com/ce/ci/docker/using_docker_images.html#how-to-use-other-images-as-services