Update to Go v1.21 #441

	name: Test and Build

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

	jobs:
	test-build:
	name: test-build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/[email protected]

	- uses: actions/setup-go@v2
	with:
	go-version: ^1.21

	- name: Test
	run: make test

	- name: Build
	run: make build

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2

	- name: Docker meta
	id: meta
	uses: docker/metadata-action@v4
	with:
	# list of Docker images to use as base name for tags
	images: \|
	ghcr.io/${{ github.repository }}
	# generate Docker tags based on the following events/attributes
	tags: \|
	type=ref,event=pr
	type=semver,pattern={{raw}}
	type=sha

	- name: Login to GitHub Packages
	if: github.event_name != 'pull_request'
	uses: docker/[email protected]
	with:
	registry: ghcr.io
	username: ${{ github.repository_owner }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and publish a docker image
	uses: docker/[email protected]
	with:
	platforms: linux/amd64,linux/arm64
	push: ${{ github.event_name != 'pull_request' }}
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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