Example of semantic versioning w/ gitlab ci/cd and semrel

gitlab-ci.yml

# example ci/cd file for gitlab ci/cd w/ poetry
# this file will run tests on merge and will bump
# the version on commit to master using go-semrel
# go-semrel commits will trigger a final test for
# the code coverage pipeline.  this file ensures 
# both the pipeline badge and coverage badge are
# populated and that the pyproject.toml file is 
# bumped as well
stages:
  - test
  - version
  - build
  - deploy

test:
  stage: test
  image: python:3.7.4-slim-buster
  script:
    - apt-get update && apt-get install -y build-essential
    - pip install --upgrade pip
    - pip install poetry
    - poetry --version
    - poetry config virtualenvs.create false
    - poetry install
    - pytest --cov=your_directory tests/ --disable-pytest-warnings
  except:
    - schedules

version:
  stage: version
  image: registry.gitlab.com/juhani/go-semrel-gitlab:v0.20.4
  before_script:
    - apt-get update 
    - apt-get install -y python3 python3-pip
    - pip3 install --upgrade pip
    - pip install poetry
  script:
    - poetry version v$(release next-version --allow-current)
    - release commit-and-tag pyproject.toml
  only:
    refs:
      - master
  except:
    changes:
      - pyproject.toml

build:
  stage: build
  image: docker:stable
  services:
    - docker:dind
  before_script:
    - apk add --no-cache curl jq python py-pip
    - pip install --upgrade pip
    - pip install awscli
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
  script:
    - docker build -t $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG -f pro.dockerfile .
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG $CI_REGISTRY_IMAGE:latest
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG $AWS_ECS_REGISTRY/$CI_PROJECT_NAME:$CI_COMMIT_TAG
    - docker tag $CI_REGISTRY_IMAGE:$CI_COMMIT_TAG $AWS_ECS_REGISTRY/$CI_PROJECT_NAME:latest
    - docker push $CI_REGISTRY_IMAGE
    - $(aws ecr get-login --no-include-email --region $AWS_REGION)
    - docker push $AWS_ECS_REGISTRY/$CI_PROJECT_NAME
  only:
    - tags
  when: on_success

deploy:
  stage: deploy
  image: python:3.7.4-slim
  before_script:
    - pip install --upgrade pip
    - pip install awscli
  script:
    - aws ecs update-service --cluster $AWS_SAND_CLUSTER --service some-service-name --region $AWS_REGION --force-new-deployment
  only:
    - tags
  when: on_success