git-tag

Fork from anothrNick/github-tag-action, make it generic and focus to generate the next tag name only.

This docker image can be used in any git projects, whatever it is github, gitlab, bitbucket, azure devops, and so on.

Usage

Local test

$ docker build -t git-tag .

$ cd <git_project>

# get the next tag name
$ docker run -ti --rm -v $(pwd):/workspace -w /workspace git-tag

sample for gitlab pipeline

generate_tag:
  stage: tag
  image: alpine/git-tag:latest
  rules:
    - if: $CI_COMMIT_TAG
      when: never                                  # Do not run this job when a tag is created manually
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH  # Run this job when commits are pushed or merged to the default branch
  script:
    - echo "create tag for branch $CI_DEFAULT_BRANCH"
    - /entrypoint.sh
    - cat build.env
    - echo "CI_COMMIT_REF_NAME is ${CI_COMMIT_REF_NAME}"
  artifacts:
    reports:
      dotenv: build.env

release_job:
  stage: tag
  image: registry.gitlab.com/gitlab-org/release-cli:latest
  needs: ["generate_tag"]
  rules:
    - if: $CI_COMMIT_TAG
      when: never                                  # Do not run this job when a tag is created manually
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH  # Run this job when commits are pushed or merged to the default branch
  script:
    - echo "running release_job for $tagName"
    - echo "CI_COMMIT_REF_NAME is ${CI_COMMIT_REF_NAME}"
  release:                                         # See https://docs.gitlab.com/ee/ci/yaml/#release for available properties
    tag_name: '$tagName'
    description: '$tagName'
    ref: '$CI_COMMIT_SHA'                          # The tag is created from the pipeline SHA.

Options

Environment Variables

DEFAULT_BUMP (optional) - Which type of bump to use when none explicitly provided (default: minor).
WITH_V (optional) - Tag version with v character.
RELEASE_BRANCHES (optional) - Comma separated list of branches (bash reg exp accepted) that will generate the release tags. Other branches and pull-requests generate versions postfixed with the commit hash and do not generate any tag. Examples: master or .* or release.*,hotfix.*,master ...
CUSTOM_TAG (optional) - Set a custom tag, useful when generating tag based on f.ex FROM image in a docker image. Setting this tag will invalidate any other settings set!
SOURCE (optional) - Operate on a relative path under $GITHUB_WORKSPACE.
DRY_RUN (optional) - Determine the next version without tagging the branch. The workflow can use the outputs new_tag and tag in subsequent steps. Possible values are true and false (default).
INITIAL_VERSION (optional) - Set initial version before bump. Default 0.0.0.
TAG_CONTEXT (optional) - Set the context of the previous tag. Possible values are repo (default) or branch.
PRERELEASE_SUFFIX (optional) - Suffix for your prerelease versions, beta by default. Note this will only be used if a prerelease branch.
VERBOSE (optional) - Print git logs. For some projects these logs may be very large. Possible values are true (default) and false.

Outputs

new_tag - The value of the newly created tag.
tag - The value of the latest tag after running this action.
part - The part of version which was bumped.

Note: This action creates a lightweight tag.

Bumping

Manual Bumping: Any commit message that includes #major, #minor, #patch, or #none will trigger the respective version bump. If two or more are present, the highest-ranking one will take precedence. If #none is contained in the commit message, it will skip bumping regardless DEFAULT_BUMP.

Automatic Bumping: If no #major, #minor or #patch tag is contained in the commit messages, it will bump whichever DEFAULT_BUMP is set to (which is minor by default). Disable this by setting DEFAULT_BUMP to none.

Note: This action will not bump the tag if the HEAD commit has already been tagged.

Workflow

Add this action to your repo
Commit some changes
Either push to master or open a PR
On push (or merge), the action will:
- Get latest tag
- Bump tag with minor version unless any commit message contains #major or #patch
- Pushes tag to github
- If triggered on your repo's default branch (master or main if unchanged), the bump version will be a release tag.
- If triggered on any other branch, a prerelease will be generated, depending on the bump, starting with *-<PRERELEASE_SUFFIX>.1, *-<PRERELEASE_SUFFIX>.2, ...

Credits

fsaintjacques/semver-tool

Projects using github-tag-action

A list of projects using github-tag-action for reference.

another/github-tag-action (uses itself to create tags)
anothrNick/json-tree-service

Access JSON structure with HTTP path parameters as keys/indices to the JSON.

alpine-docker / git-tag