GitLab	CircleCI
Defining a job that executes a single build step
`job1: script: "execute-script-for-job1"`	`jobs: job1: steps: - checkout - run: "execute-script-for-job1"`
Specify a Docker image to use for a job.
`job1: image: node:10`	`jobs: job1: docker: - image: node:10`
Define a multi-stage build pipeline. Job1 and Job2 run concurrently. Once they are done, Job3 runs. Once Job3 is done, Job4 runs.
`job1: stage: build script: make build dependencies job2: stage: build script: make build artifacts job3: stage: test script: make test job4: stage: deploy script: make deploy stages: - build - test - deploy`	`version: 2.1 jobs: job1: steps: - checkout - run: make build dependencies job2: steps: - run: make build artifacts job3: steps: - run: make test job4: steps: - run: make deploy workflows: jobs: - job1 - job2 - job3: requires: - job1 - job2 - job4: requires: - job3`
Execute jobs on multiple platforms. GitLab uses tags to identify build runners. CircleCI provides all major OSes and Docker and must be explicitly set in config. See our execution environments documentation for more information.
`ubuntu job: tags: - ubuntu script: - echo "Hello, $USER!" osx job: tags: - osx script: - echo "Hello, $USER!"`	`jobs: ubuntu-job: machine: ubuntu-2404:current steps: - checkout - run: echo "Hello, $USER!" osx-job: macos: xcode: 27.0.0 steps: - checkout - run: echo "Hello, $USER!"`
Cache Dependencies.
`image: node:latest # Cache modules in between jobs cache: key: ${CI_COMMIT_REF_SLUG} paths: - node_modules/ before_script: - npm install test_async: script: - node ./specs/start.js`	`jobs: test_async: steps: - restore_cache: key: source-v1-{{ checksum "package.json" }} - checkout - run: npm install - save_cache: key: source-v1-{{ checksum "package.json" }} paths: - node_modules - run: node ./specs/start.js`

GitLab

CircleCI

Defining a job that executes a single build step

job1:
  script: "execute-script-for-job1"

jobs:
  job1:
    steps:
      - checkout
      - run: "execute-script-for-job1"

Specify a Docker image to use for a job.

job1:
  image: node:10

jobs:
  job1:
    docker:
      - image: node:10

Define a multi-stage build pipeline. Job1 and Job2 run concurrently. Once they are done, Job3 runs. Once Job3 is done, Job4 runs.

job1:
  stage: build
  script: make build dependencies

job2:
  stage: build
  script: make build artifacts

job3:
  stage: test
  script: make test

job4:
  stage: deploy
  script: make deploy

stages:
  - build
  - test
  - deploy

version: 2.1
jobs:
  job1:
    steps:
      - checkout
      - run: make build dependencies
  job2:
    steps:
      - run: make build artifacts
  job3:
    steps:
      - run: make test
  job4:
    steps:
      - run: make deploy

workflows:
  jobs:
    - job1
    - job2
    - job3:
        requires:
          - job1
          - job2
    - job4:
        requires:
          - job3

Execute jobs on multiple platforms. GitLab uses tags to identify build runners. CircleCI provides all major OSes and Docker and must be explicitly set in config. See our execution environments documentation for more information.

ubuntu job:
  tags:
    - ubuntu
  script:
    - echo "Hello, $USER!"

osx job:
  tags:
    - osx
  script:
    - echo "Hello, $USER!"

jobs:
  ubuntu-job:
    machine:
      ubuntu-2404:current
    steps:
      - checkout
      - run: echo "Hello, $USER!"
  osx-job:
    macos:
      xcode: 27.0.0
    steps:
      - checkout
      - run: echo "Hello, $USER!"

Cache Dependencies.

image: node:latest

# Cache modules in between jobs
cache:
  key: ${CI_COMMIT_REF_SLUG}
  paths:
    - node_modules/

before_script:
  - npm install

test_async:
  script:
    - node ./specs/start.js

jobs:
  test_async:
    steps:
      - restore_cache:
          key: source-v1-{{ checksum "package.json" }}
      - checkout
      - run: npm install
      - save_cache:
          key: source-v1-{{ checksum "package.json" }}
          paths:
            - node_modules
      - run: node ./specs/start.js