Merge pull request #9 from atorber/dev #19

	# docker-image.yml
	name: Publish Docker image # workflow名称，可以在Github项目主页的【Actions】中看到所有的workflow

	on: # 配置触发workflow的事件
	push:
	tags: # tag更新时触发此workflow
	- '*'

	jobs: # workflow中的job

	push_to_registry: # job的名字
	name: Push Docker image to Docker Hub
	runs-on: ubuntu-latest # job运行的基础环境

	steps: # 一个job由一个或多个step组成
	- name: Check out the repo
	uses: actions/checkout@v2 # 官方的action，获取代码

	- name: Log in to Docker Hub
	uses: docker/login-action@v1 # 三方的action操作，执行docker login
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }} # 配置dockerhub的认证，在Github项目主页【Settings】 -> 【Secrets】添加对应变量
	password: ${{ secrets.DOCKERHUB_TOKEN }}

	- name: Extract metadata (tags, labels) for Docker
	id: meta
	uses: docker/metadata-action@v3 # 抽取项目信息，主要是镜像的tag
	with:
	images: atorber/wechatgpt

	- name: Build and push Docker image
	uses: docker/build-push-action@v2 # docker build & push
	with:
	context: .
	push: true
	tags: ${{ steps.meta.outputs.tags }}
	labels: ${{ steps.meta.outputs.labels }}

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