Gitlab-ci.yml Docker executer cannot run shell commands

Question

I have a ubuntu 18.04 server installed Gitlab-EE in it. I can access my runners and many other thing. I want to setup CI/CD with GitLab. So lets begin :

Error :

My gitlab-ci.yml

image: docker:latest

services:
- docker:dind

stages:
  - build
  - deploy


build:
  image: node:latest
  stage: build
  tags:
  - api
  before_script:
  - apt-get update -qq
  - apt-get install -y
  script:
    - npm install


deploy:
  services:
    - node:latest
  image: node:latest
  stage: deploy
  tags:
    - api
  script:
    - sudo apt install python-pip
    - sudo pip install docker-compose
    - npm run dc:up ( this makes docker-composer build )

build stage completes successfully deploy stage give error.

My Gitlab Runner :

concurrent = 1
check_interval = 0

[session_server]
  session_timeout = 1800

[[runners]]
  name = "Api-Runner"
  url = "XX"
  token = "XXX"
  executor = "docker"
  [runners.docker]
    tls_verify = false
    image = "node:latest"
    privileged = true
    disable_entrypoint_overwrite = false
    oom_kill_disable = false
    disable_cache = false
    volumes = ["/cache"]
    shm_size = 0
  [runners.cache]
    [runners.cache.s3]
    [runners.cache.gcs]

I want to install docker-composer for my project to run. If I remove the 'sudo' command the output gives like this

Answer 1

Looks like the image you are using (node:latest) does not include the command sudo. It also looks like it defaults to the root user, so maybe you can just avoid using sudo altogether?

You can explore the environment/container in which your job will be running by starting your own container from that image: docker run --rm -ti node:latest bash

If you can work it out manually by using a container like that, then you can use that recipe in your gitlab-ci.yml file.

In particular, though, keep in mind that gitlab will start a new container for each job, so you probably want to add apt-get update -qq to your deploy job as well.