upgrade to rails 6

.env

@@ -1,4 +1,4 @@
-export DEVISE_SECRET_KEY=3f4915489bd10fdbacb4f22dbf772a4be6e2d2d1616a1af7913f0f6645784ddffd6a71ab9f69a99ed7941f16d3092e1872bc4bc9add5a0615c630c90f94fc032
-export RAILS_SECRET_KEY=4944cf251e3dbf309ed71ebcd8990a1479d793011cd4011761e3fbea9ecc59edefd0cb49a0ed9b5c0261ab0dda841962bb7dd28fd3f99579bfa2beec26329961
-export RECAPTCHA_SITE_KEY=6Le_W5gUAAAAAJFOELNu2LkSR2E6sXYIVZrMe6V0
-export RECAPTCHA_SECRET_KEY=6Le_W5gUAAAAABZpnGQtfVaQdfluuLrf8wihooeo
+DEVISE_SECRET_KEY=3f4915489bd10fdbacb4f22dbf772a4be6e2d2d1616a1af7913f0f6645784ddffd6a71ab9f69a99ed7941f16d3092e1872bc4bc9add5a0615c630c90f94fc032
+RAILS_SECRET_KEY=4944cf251e3dbf309ed71ebcd8990a1479d793011cd4011761e3fbea9ecc59edefd0cb49a0ed9b5c0261ab0dda841962bb7dd28fd3f99579bfa2beec26329961
+RECAPTCHA_SITE_KEY=6Le_W5gUAAAAAJFOELNu2LkSR2E6sXYIVZrMe6V0
+RECAPTCHA_SECRET_KEY=6Le_W5gUAAAAABZpnGQtfVaQdfluuLrf8wihooeo

.ruby-version

@@ -1 +1 @@
-2.7.6
+3.1.0

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:2.7.6-slim
+FROM ruby:3.1.0-slim
 
 # Add basic binaries
 RUN apt-get update \

Gemfile

@@ -1,15 +1,15 @@
 source 'https://rubygems.org'
-ruby '2.7.6'
+ruby '3.1.0'
 
-gem 'rails', '5.2.8'
+gem 'rails', '6.1.7'
 
 gem 'activeadmin', '~> 2.1'
 gem 'bootsnap', require: false
 gem 'bootstrap-sass', '>= 3.4.1'
 gem 'bugsnag'
 gem 'coffee-rails', '~> 4.2'
 gem 'country_select'
-gem 'devise', '~> 4.6'
+gem 'devise', '~> 4.8.1'
 gem 'geocoder', '~> 1.6.1'
 gem 'grape', '~> 1.3.0'
 gem 'grape-swagger'
@@ -21,6 +21,7 @@ gem 'jbuilder', '~> 2.5'
 gem 'kaminari', '~> 1.1'
 gem 'kaminari-grape', '~> 1.0'
 gem 'mail_form', '>= 1.7.0'
+gem 'net-smtp'
 gem 'pg'
 gem 'pg_search'
 gem 'puma'
@@ -37,9 +38,7 @@ gem 'webpacker', '~> 5'
 group :development, :test do
   gem 'better_errors', '~> 2.9.1'
   gem 'binding_of_caller'
-  gem 'dotenv-rails', '~> 2.2.1'
   gem 'factory_bot_rails', '~> 4.8.2'
-  gem 'listen', '>= 3.0.5', '< 3.2'
   gem 'pry'
   gem 'rspec-rails'
   gem 'rubocop', require: false