update github workflows #18

	name: publish-docker
	on:
	workflow_dispatch:
	push:
	tags:
	- 'v*'

	jobs:
	build:
	name: docker-publish
	runs-on: ubuntu-latest

	steps:
	- name: Src Checkout
	uses: actions/checkout@v3
	with:
	fetch-depth: 1

	- name: Setup Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.21.x'
	check-latest: true
	id: go

	- name: Tests
	if: success()
	env:
	GOPROXY: "https://proxy.golang.org"
	run: make test

	- name: Build
	if: success()
	env:
	GOPROXY: "https://proxy.golang.org"
	run: make build

	- name: Build Container
	if: success()
	run: \|
	TAG=$(git describe --tags)
	docker build -f examples/Dockerfile -t cactus4docker/go-camo:${TAG} .
	# also tag as latest?
	# docker tag cactus4docker/go-camo:${TAG} cactus4docker/go-camo:latest

	- name: Publish Container
	if: success()
	env:
	DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
	DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
	run: \|
	TAG=$(git describe --tags)
	LATEST_TAG=$(git tag -l \| grep -viE '(alpha\|beta)' \| sort -V \| tail -n 1)
	echo "$DOCKER_PASSWORD" \| docker login -u "$DOCKER_USERNAME" --password-stdin
	docker push cactus4docker/go-camo:${TAG}
	if [[ "$TAG" = "$LATEST_TAG" ]]; then
	docker tag cactus4docker/go-camo:${TAG} cactus4docker/go-camo:latest
	docker push cactus4docker/go-camo:latest
	fi
	docker logout

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