Update README.md on tag creation #19

	name: Update README.md on tag creation

	on:
	create:

	jobs:
	build:
	if: startsWith(github.ref, 'refs/tags/')
	runs-on: ubuntu-latest

	permissions:
	contents: write

	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Update README.md
	run: \|
	echo "Tag ${{ github.ref }} was created."
	VERSION=${GITHUB_REF#refs/tags/}
	sed "s/readme-$.*$-blue/readme-$VERSION-blue/g" README.md > temp.md
	mv temp.md README.md
	git config --local user.email "actions@github.com"
	git config --local user.name "GitHub Actions"
	git add README.md
	git commit -m "Update README.md for tag '$VERSION' [skip ci]"
	git push origin HEAD:main

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