How can I use Docker in my GitLab CI/CD pipeline?

How can I use Docker in my GitLab CI/CD pipeline?

You can use Docker in your GitLab CI/CD pipeline by defining a .gitlab-ci.yml file that specifies Docker images and services.

Can you provide an example of a .gitlab-ci.yml file that uses Docker?

Sure! Here's a simple example:

image: docker:latest

services:
  - docker:dind

stages:
  - build

build:
  stage: build
  script:
    - docker build -t my-image:latest .

What if I need to run tests in a separate Docker container?

You can define another job in your .gitlab-ci.yml file for testing, using a different Docker image. For example:

test:
  stage: test
  image: my-image:latest
  script:
    - docker run my-image:latest test