added troubleshooting section to readme (#273) #9

	# This workflow uses actions that are not certified by GitHub.
	# They are provided by a third-party and are governed by
	# separate terms of service, privacy policy, and support
	# documentation.

	# GitHub recommends pinning actions to a commit SHA.
	# To get a newer version, you will need to update the SHA.
	# You can also reference a tag or branch, but the action may change without warning.

	name: Publish Docker image

	on:
	push:
	branches: [ "master" ]

	jobs:
	push_to_registry:
	name: Push Docker image to Docker Hub
	runs-on: ubuntu-latest
	steps:
	- name: Check out the repo
	uses: actions/checkout@v4

	- name: Log in to Docker Hub
	uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_PASSWORD }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
	with:
	images: histotools/HistoQC

	- name: Build and push Docker image
	uses: docker/build-push-action@3b5e8027fcad23fda98b2e3ac259d8d67585f671
	with:
	context: .
	file: ./Dockerfile
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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