Merge branch 'upgrade-ruby-2.7.0'

Author: ohbarye

README.md

@@ -4,7 +4,7 @@
 
 **Here is an example application with the following modern web technology stacks. With this boilerplate, you can easily start to build your own app.**
 
-- [Ruby](https://www.ruby-lang.org/en/) 2.6.5
+- [Ruby](https://www.ruby-lang.org/en/) 2.7.0
 - [Rails](https://rubyonrails.org/) 6.0.0
 - [React.js](https://reactjs.org/) 16.10.2
 - [TypeScript](https://www.typescriptlang.org/) 3.6.3

backend/.ruby-version

@@ -1 +1 @@
-2.6.3
+2.7.0

backend/Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:2.6.5
+FROM ruby:2.7.0
 RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
 RUN mkdir -p /myapp/backend
 WORKDIR /myapp/backend

backend/Gemfile

@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '2.6.5'
+ruby '2.7.0'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 6.0.1'

backend/Gemfile.lock

@@ -197,7 +197,7 @@ DEPENDENCIES
   web-console (>= 3.3.0)
 
 RUBY VERSION
-   ruby 2.6.5p114
+   ruby 2.7.0p0
 
 BUNDLED WITH
-   1.17.3
+   2.1.3