Update CHANGELOG.md, VERSION, and Gemfile.lock #20

	name: ci

	on:
	pull_request:
	push:
	branches:
	- master
	tags:
	- 'v[0-9]+.[0-9]+.[0-9]+'

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Setup ruby and install deps
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 3.1
	bundler-cache: true
	bundler: default

	- name: Run lint
	run: bundle exec rubocop

	- name: Build plugin
	run: bundle exec rake build

	- name: Run tests
	run: bundle exec rake test

	- name: Capture version
	run: echo "VERSION=$(cat VERSION)" >> $GITHUB_ENV

	- name: Verify tag version matchs VERSION file
	# Only run this test when run on a tag
	if: startsWith(github.ref, 'refs/tags/v')
	# Fail if the tag name does not match the version in the VERSION file.
	run: test "${{ github.ref }}" == "refs/tags/v${{ env.VERSION }}"

	- name: Login to Docker Hub
	if: startsWith(github.ref, 'refs/tags/v')
	uses: docker/login-action@v2
	with:
	username: scalyr
	password: ${{ secrets.DOCKER_PASSWORD }}

	- name: Build Docker Image
	uses: docker/build-push-action@v4
	with:
	# set push to true when a tag is created
	push: ${{ startsWith(github.ref, 'refs/tags/v') }}
	file: docker/Dockerfile
	context: .
	tags: \|
	scalyr/fluentd:latest
	scalyr/fluentd:${{ env.VERSION }}

	- name: Write RubyGems Credentials to a file
	if: startsWith(github.ref, 'refs/tags/v')
	run: ./scripts/set-up-rubygems-credentials.sh
	env:
	RUBYGEMS_API_KEY: ${{ secrets.RUBYGEMS_API_KEY }}

	- name: Publish package to RubyGems
	if: startsWith(github.ref, 'refs/tags/v')
	run: gem push pkg/fluent-plugin-scalyr-${{ env.VERSION }}.gem

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