add libcairo2-dev libjpeg-dev libgif-dev #170

	# This is a basic workflow to help you get started with Actions

	name: dockerhub:2020.0

	on:
	push:
	branches:
	- 'main'
	workflow_dispatch:
	schedule:
	# * is a special character in YAML so you have to quote this string 1:00 weekly,Friday,1:00 #m h d/m m d/w
	- cron: '25 2 * * 5'

	jobs:
	docker:
	runs-on: ubuntu-latest
	steps:
	-
	name: Set up QEMU
	uses: docker/setup-qemu-action@v2
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	-
	name: Login to DockerHub
	uses: docker/login-action@v2
	with:
	username: ${{ secrets.DOCKERHUB_USERNAME }}
	password: ${{ secrets.DOCKERHUB_TOKEN }}
	-
	name: Build for test
	id: docker_build
	uses: docker/build-push-action@v3
	with:
	file: ./Dockerfile20
	push: true
	tags: credocker/crecoding:check20

	-
	name: Test
	run: \|
	docker run credocker/crecoding:check20 /cre/coding-test.sh
	-
	name: Build and push
	id: docker_push
	uses: docker/build-push-action@v3
	with:
	file: ./Dockerfile20
	push: true
	tags: credocker/crecoding:2020.0, credocker/crecoding:latest

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