python-docker-gitlab-ci.yml

image: docker:stable

services:
  - docker:dind

stages:
  - build_base_image
  - build_test_image
  - test
  - deploy

variables:
  SERVISE_NAME: example
  PROJECT_FOLDER: example
  PROJECT_HOST: example.com
  PROJECT_HTTP_PROTOCOL: http
  
  BASE_IMAGE_NAME: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG-$CI_COMMIT_SHORT_SHA
  TEST_IMAGE_NAME: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG-$CI_COMMIT_SHORT_SHA-test
  
  GIT_STRATEGY: none

default:
  before_script:
    - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY


build-base:
  stage: build_base_image
  variables:
    GIT_STRATEGY: fetch
  script:
    - docker build -t $BASE_IMAGE_NAME -f Dockerfile .
    - docker push $BASE_IMAGE_NAME

build-test:
  stage: build_test_image
  script:
    - docker run --entrypoint "" --name tmp $BASE_IMAGE_NAME pipenv install --system --dev --ignore-pipfile
    - docker commit tmp $TEST_IMAGE_NAME
    - docker push $TEST_IMAGE_NAME
  only:
    changes:
      - Docerfile
      - .pre-commit-config.yaml
      - tests/**/*
      - $PROJECT_FOLDER/**/*

check_stile:
  stage: test
  script:
    - docker run $TEST_IMAGE_NAME pre-commit run -a
  only:
    changes:
      - Docerfile
      - .pre-commit-config.yaml
      - tests/**/*
      - $PROJECT_FOLDER/**/*

tests:
  stage: test
  script:
    - docker run $TEST_IMAGE_NAME pytest --cov
  coverage: '/^TOTAL.+?(\d+%)$/'
  only:
    changes:
      - Docerfile
      - tests/**/*
      - $PROJECT_FOLDER/**/*

deploy to staging:
  stage: deploy
  image:
    name: bitnami/kubectl:latest
    entrypoint: [""]
  variables:
    GIT_STRATEGY: fetch
    NAMESPACE: default
  services: []
  before_script: []
  script:
    - kubectl set image -n $NAMESPACE deployment/$SERVISE_NAME *="$BASE_IMAGE_NAME"
  environment:
    name: staging
    url: $PROJECT_HOST://develop.$PROJECT_HOST
  when: manual
  only:
    - master
    - develop

deploy to production:
  stage: deploy
  image:
    name: bitnami/kubectl:latest
    entrypoint: [""]
  variables:
    GIT_STRATEGY: fetch
    NAMESPACE: production
  services: []
  before_script: []
  script:
    - kubectl set image -n $NAMESPACE deployment/$SERVISE_NAME *="$BASE_IMAGE_NAME"
  environment:
    name: prod
    url: $PROJECT_HTTP_PROTOCOL://$PROJECT_HOST
  when: manual
  only:
    - master