Add tests for Serf #95

	name: Go package

	on: [pull_request, push]

	jobs:
	build:

	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.21'

	- name: Build
	run: go build ./...

	- name: Docker compose up
	run: \|
	docker compose up -d

	until docker exec mysql mysqladmin ping -h "127.0.0.1" --silent; do
	echo 'waiting for mysql...'
	sleep 3
	done

	- name: Test
	run: go test -v ./...

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