🤝 Sync `alphagov/main` into this repository (#5) #8

	name: Publish

	on:
	push:
	branches:
	- main
	workflow_dispatch:

	concurrency: rubygems

	jobs:
	pre:
	name: Pre-flight checks
	runs-on: ubuntu-latest
	outputs:
	go: ${{ steps.gem_version.outputs.new_version }}

	steps:
	- uses: actions/checkout@v3

	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: '3'

	- name: Check if new version to release
	id: gem_version
	run: \|
	gem_version=$(ruby -r rubygems -e "puts Gem::Specification::load('govuk_tech_docs.gemspec').version")
	echo "gem_version=$gem_version" >> "$GITHUB_OUTPUT"

	if git fetch origin "refs/tags/v${gem_version}" >/dev/null 2>&1
	then
	echo "Tag 'v$gem_version' already exists"
	echo "new_version=false" >> "$GITHUB_OUTPUT"
	else
	echo "new_version=true" >> "$GITHUB_OUTPUT"
	fi

	deploy:
	name: Publish Ruby Gem
	environment: github-package-registry
	permissions:
	contents: write # needed to be able to tag the release
	packages: write # needed to be able to publish the gem
	runs-on: ubuntu-latest
	needs: pre
	if: ${{ needs.pre.outputs.go == 'true' }}

	steps:
	- uses: actions/checkout@v3

	- uses: actions/setup-node@v3
	with:
	node-version-file: '.nvmrc'
	cache: 'npm'

	- uses: ruby/setup-ruby@v1
	with:
	ruby-version: '3'
	bundler-cache: true

	- name: Publish
	uses: dawidd6/action-publish-gem@v1
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}

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