docs: update install instructions and versioning (#562) #3

	name: Container image build

	on:
	push:
	branches:
	- master

	jobs:
	ko:
	runs-on: ubuntu-22.04
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- uses: actions/setup-go@v5
	with:
	go-version-file: go.mod
	- name: "ko: install"
	run: make ko
	- name: "ko: login to quay.io container registry"
	run: ./bin/ko login quay.io -u ${{ secrets.QUAY_IO_USERNAME }} -p ${{ secrets.QUAY_IO_TOKEN }}
	- name: "ko: login to docker.io container registry"
	run: ./bin/ko login docker.io -u ${{ secrets.DOCKER_IO_USERNAME }} -p ${{ secrets.DOCKER_IO_TOKEN }}
	- name: "ko: build and push latest"
	run: make VERSION=latest KO_LOCAL=false KO_PUSH=true build
	- name: "ko: build and push tag"
	run: make VERSION=${{ github.ref_name }} KO_LOCAL=false KO_PUSH=true build
	if: startsWith(github.event.ref, 'refs/tags/v')

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