Added buildpack to heroku #44

	name: CI
	on: [push]
	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	ruby:
	- '2.7.4'
	- '3.2.0'
	repository:
	- 'ppa:alex-p/tesseract-ocr5'
	- 'ppa:alex-p/tesseract-ocr-devel'
	steps:
	- uses: actions/checkout@v2
	- name: Install tesseract-ocr
	run: \|
	sudo add-apt-repository ${{ matrix.repository }} -y
	sudo apt-get update -q
	sudo apt-get install tesseract-ocr tesseract-ocr-eng ghostscript -y
	tesseract --version
	- name: Setup Ruby
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: ${{ matrix.ruby }}
	- name: Bundle
	run: \|
	gem uninstall -aIx bundler
	gem install bundler
	bundle install --jobs 4 --retry 3
	- name: Test
	run: bundle exec rake
	- name: Coverage
	env:
	CODACY_PROJECT_TOKEN: ${{ secrets.CODACY_PROJECT_TOKEN }}
	run: bash <(curl -Ls https://coverage.codacy.com/get.sh) report -l Ruby -r coverage/lcov/*

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