feat(docker): rework docker on the spot #30

	name: Build Docker image
	on:
	push:
	branches: [ '*' ]
	paths-ignore:
	- "/docs/"
	- "**.md"
	pull_request:
	branches: [ main ]

	jobs:
	docker:
	runs-on: ubuntu-latest
	env:
	DOCKERHUB_USER: cargogenerate
	DOCKERHUB_IMAGE: cargo-generate-action
	steps:
	# Check out code
	- name: Checkout
	uses: actions/checkout@v3
	# This is the a separate action that sets up buildx runner
	- name: Login to DockerHub
	uses: docker/login-action@v1
	with:
	username: ${{ env.DOCKERHUB_USER }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}
	# And make it available for the builds
	- name: Build only
	uses: docker/build-push-action@v2
	with:
	context: .
	push: false

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