Update alpine Docker tag to v3.19 #48

	name: publish

	on: [push]

	jobs:
	publish-hello-world-image:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v1
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build the hello-world Docker image
	run: \|
	docker build . --tag ghcr.io/jonashackt/hello-world:latest
	docker run ghcr.io/jonashackt/hello-world:latest
	docker push ghcr.io/jonashackt/hello-world:latest

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