Update go to version 1.21 #79

	name: Build

	on:
	pull_request

	jobs:
	build:
	name: Go
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: "1.21"
	id: go

	- name: Print Go version
	run: go version

	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	- name: Build
	run: go build -v .

	build_docker:
	name: Docker
	runs-on: ubuntu-latest
	steps:
	- name: Check out code into the Go module directory
	uses: actions/checkout@v3

	- name: Build Docker image
	run: docker build . --file Dockerfile --tag inx-poi:latest

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