Automation of release with gitlab CI

.gitlab-ci.yml

image: python:3.8-alpine

stages:
  - prepare
  - build
  - release

# Prepare job is need for creating env var with name of release
# Var will be passed to build_release job with dotenv artifact
prepare_job:
  stage: prepare
  only:
    - /^\d+\.\d+\.\d+$/
  script:
  - echo "Generate release name ..."
  - env
  - adjective=$(shuf -n 1 adjectives.txt)            #get random adj
  - noun=$(shuf -n 1 nouns.txt)                      #get random noun 
  - echo "RELEASE_NAME=${adjective}-${noun}" >> .env #concat them together
  artifacts:
    reports:
      dotenv: .env

# Stub job for running on all branches except master and release tags
build_dev:
  stage: build
  script:
  - echo "stub \ building dev ver"
  except:
  - master
  - tags

release_tag:
  stage: build
  script:
    # Here we install bump2versions package and configuring git user settings
    - apk add git --no-cache
    - pip --no-cache-dir install bump2version
    - git config --global user.email "${BOT_EMAIL}"
    - git config --global user.name "${BOT_NAME}"
    # getting giltab url and removing default token
    - url_host=$(git remote get-url origin | sed -e 's/http[s]*:\/\/gitlab-ci-token:.*@//g')
    # add new git remote with new token with needed permissions
    - git remote set-url origin "http://gitlab-ci-token:${BOT_TOKEN}@${url_host}"
    # Create release version vith bumpversion and add a key work AUTOMATION to prevent running this job again 
    - bumpversion release --message "AUTOMATION > Bump version {current_version} → {new_version}"
    # Getting last tag
    - git_last_tag=$(git describe --abbrev=0)
    # Pushing only last tag
    - git push origin ${git_last_tag} --quiet
    # Pushing commits
    - git push --quiet origin HEAD:master
  rules:
    # If BOT_NAME is set
    # And commit message dont inclued AUTOMATION word
    # And branch is master
    - if: '$BOT_NAME && $CI_COMMIT_MESSAGE !~ /AUTOMATION/ && $CI_COMMIT_BRANCH == "master"' #&& $CI_COMMIT_MESSAGE =~ /\d+\.\d+\.\d+-rc\d*/'

# Job for creating release from tag
build_release:
  stage: build
  image: registry.gitlab.com/gitlab-org/release-cli:latest
  script:
    - echo "stub \ building stable ver"
  needs:
    - job: prepare_job
      artifacts: true
  only:
    - /^\d+\.\d+\.\d+$/
  release:
    name: $CI_COMMIT_TAG $RELEASE_NAME
    tag_name: $CI_COMMIT_TAG
    description: "Release codename: $RELEASE_NAME"

# Just a test job for master
test_master:
  stage: release
  script:
    - echo "Testing master"
    - env
  rules:
    - if: '$GITLAB_USER_NAME == $BOT_NAME && $CI_COMMIT_BRANCH == "master"'