GitHub action for versioning your repository using NBGV

README.md

Simple versioning of your repository

Using NBGV to tag your master branch on push.

tag-master-branch-workflow.yml

name: tag-master-branch
env:
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
on:
  push:
    branches:
      - master

jobs:
  build:
    runs-on: ubuntu-16.04
    steps:
      - uses: actions/checkout@v1

      - uses: aarnott/nbgv@master
        with:
          setAllVars: true
      - run: echo "VERSION= $NBGV_Version"

      - name: Chmod shell script
        run: chmod +x ./version.sh
        shell: bash
        continue-on-error: true

      - name: Version
        run: ./version.sh
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        shell: bash

version.json

{
    "$schema": "https://raw.githubusercontent.com/AArnott/Nerdbank.GitVersioning/master/src/NerdBank.GitVersioning/version.schema.json",
    "version": "1.0",

    "publicReleaseRefSpec": [
      "^refs/heads/master$",
      "^refs/tags/v\\d+\\.\\d+"
    ]
  }

version.sh

#!/bin/bash

# Get the latest tag
tag=$(git describe --tags `git rev-list --tags --max-count=1`)
tag_commit=$(git rev-list -n 1 $tag)

# Get current commit hash for tag
commit=$(git rev-parse HEAD)

if [ "$tag_commit" == "$commit" ]; then
    echo "No new commits since previous tag.."
    exit 1
fi

if [ ! -f "version.json" ]; then
    echo "Could not find version.json file.."
    exit 1
fi

# Prefix release with 'v'
new="v$NBGV_Version"
echo ::set-output name=new_tag::$new

# Push new tag ref to GitHub
dt=$(date '+%Y-%m-%dT%H:%M:%SZ')
full_name=$GITHUB_REPOSITORY
git_refs_url=$(jq .repository.git_refs_url $GITHUB_EVENT_PATH | tr -d '"' | sed 's/{\/sha}//g')

echo "$dt: pushing tag $new to repo $full_name"
echo $git_refs_url
cat $GITHUB_EVENT_PATH | jq '.'

curl -s -X POST $git_refs_url \
-H "Authorization: token $GITHUB_TOKEN" \
-d @- << EOF

{
  "ref": "refs/tags/$new",
  "sha": "$commit"
}
EOF

Cool thanks @danielcrenna. Will update it