gitlab - Why docker image doesn't run "docker build"?

Question

I'm using gitlab ci, and sorry for the silly question, but why that code below doesn't work?

image: docker:stable

stages:
  - build

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

When I run a docker image of docker on my terminal I'm able to use these commands like docker build.

For the gitlab-ci above works, I've to add the services: docker:dind, but I don't really understand why, since I've an image that theoretically has the commands that I need.

Sry about my English, btw.

Thx in advance.

question from:https://stackoverflow.com/questions/65839561/why-docker-image-doesnt-run-docker-build

Answer 1

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