github: add Ruby 3.4 for CI #20

	name: CI

	on:
	push:
	branches:
	- master
	pull_request:

	jobs:
	docker:
	name: ${{ matrix.target.env }}
	strategy:
	matrix:
	target:
	- env: ubuntu
	dockerfile: Dockerfile.ubuntu
	- env: tdagent-ubuntu
	dockerfile: Dockerfile.tdagent-ubuntu
	- env: ruby32
	dockerfile: Dockerfile.ruby32
	- env: ruby34
	dockerfile: Dockerfile.ruby34
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	- name: Build and push
	id: docker_build
	uses: docker/build-push-action@v6
	with:
	file: test/docker/${{ matrix.target.dockerfile }}
	rubocop:
	runs-on: ubuntu-latest
	steps:
	-
	uses: actions/checkout@v4
	-
	uses: ruby/setup-ruby@v1
	with:
	bundler-cache: true
	-
	run: bundle exec rake rubocop

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