GitHub Action | Release with semver version bump + release branch tagging

workflow.yaml

name: Release

on:
  workflow_dispatch:
    inputs:
      versionBump:
        description: 'Version bump'
        required: true
        default: 'patch'
        type: choice
        options:
          - major
          - minor
          - patch

jobs:
  release:
    name: release
    runs-on: ubuntu-latest

    steps:
      - name: Checkout release branch
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          repository: ${{ github.repository }}
          ref: release
          token: ${{ secrets.GH_TOKEN }}

      - name: Commit new release
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"
          git commit --allow-empty -m "#${{ github.event.inputs.versionBump }}"
          git push

      - name: Bump version and push tag
        run: |
          curl https://raw.githubusercontent.com/fsaintjacques/semver-tool/master/src/semver -o semver
          mv semver /usr/local/bin
          chmod +x /usr/local/bin/semver
          t=$(git rev-list --tags --max-count=1)
          if [[ $t != "" ]]; then
            t=$(git describe --tags $t)
          fi
          prevVersion="${t:-v0.0.0}"
          newVersion=""
          input="${{ github.event.inputs.versionBump }}"
          case "$input" in
              *major*) newVersion=$(semver bump major $prevVersion);;
              *minor*) newVersion=$(semver bump minor $prevVersion);;
              *patch*) newVersion=$(semver bump patch $prevVersion);;
              *) newVersion=$(semver bump patch $prevVersion);;
          esac
          newVersion="v$newVersion"
          echo "Previous version: $prevVersion"
          echo "New version: $newVersion"
          git tag $newVersion
          git push origin $newVersion

      - name: Merge release -> main
        uses: devmasx/merge-branch@v1.4.0
        with:
          type: now
          from_branch: release
          target_branch: main
          github_token: ${{ secrets.GH_TOKEN }}