feat: add selector node filter demo #69

	name: Go

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main
	workflow_dispatch:

	jobs:
	build:
	strategy:
	matrix:
	go: [ 1.16, 1.17 ]
	name: build & test
	runs-on: ubuntu-latest
	services:
	etcd:
	image: gcr.io/etcd-development/etcd:v3.5.0
	ports:
	- 2379:2379
	env:
	ETCD_LISTEN_CLIENT_URLS: http://0.0.0.0:2379
	ETCD_ADVERTISE_CLIENT_URLS: http://0.0.0.0:2379
	consul:
	image: consul:latest
	ports:
	- 8500:8500
	nacos:
	image: nacos/nacos-server:latest
	env:
	MODE: standalone
	ports:
	- "8848:8848"
	- "9848:9848"
	polaris:
	image: houseme/polaris-server-with-config:latest
	ports:
	- 8090:8090
	- 8091:8091
	steps:
	- uses: actions/checkout@v2
	- name: Set up Go
	uses: actions/setup-go@v2
	with:
	go-version: ${{ matrix.go }}
	- name: Examples
	run: \|
	go build ./...
	go test ./...

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