FIX exercises 1 and 4 and minor changes in header, as well as removal… #6

	name: docker

	on:
	workflow_dispatch:
	inputs:
	tag:
	type: string
	description: Docker image tag
	default: latest
	push:
	paths:
	- .github/workflows/docker.yaml
	- Dockerfile
	- environment.yml

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	-
	name: Checkout
	uses: actions/checkout@v3
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	-
	name: Login to Docker Hub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}
	-
	name: Build and push notebook
	uses: docker/build-push-action@v4
	with:
	context: .
	platforms: linux/amd64
	push: true
	file: Dockerfile
	tags: iamzoltan/climatematch-notebook:${{ github.event.inputs.tag \|\| 'latest' }}

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