Update Dockerfile ruby and brakeman versions #53

	name: Style checks

	on:
	push:
	branches:
	- main
	pull_request:
	types:
	- opened
	- edited

	permissions:
	contents: read

	jobs:
	rubocop:
	name: Rubocop Action
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@master
	- name: Set up Ruby 2.7.5
	uses: ruby/setup-ruby@v1
	with:
	ruby-version: 2.7.5
	- name: Bundle
	run: \|
	gem install bundler
	bundle install --jobs 4 --retry 3
	- name: Run Rubocop
	run: rubocop

Provide feedback