🔥Docker and environment variables cleanup (#270)

* Added dotenv-rails gem to manage environment variables

* Added dotenv-rails gem to manage environment variables
* Removed figaro which was used earlier for this purpose

* Standardized variable names

* Changed all env variables to be upper case. This included changes in files referencing env variables.
* Added example env file with all variables set to empty value
* Removed the earlier setup of copying application.yml and database.yml and the scripts and documentation associated to this

* Docker setup

* Added docker file for building the docker images
* Added entrypoint.sh script which is referenced inside the Docker image
* Cloned the Procfile for development using docker which has slight change compared to regular procfile
* Added the docker-compose.yml which has 3 service's configuration, postgres, redis and chatwoot server and a mounted volume for postgres

* Added docker related info to documentation

* Added the docker setup info in the documentation
* Added info for using`rbenv` instead of rvm for managing ruby versions
* Updated the documentation for environment variables to have one about `dotenv-rails` gem and removed the documentation about the old copy paste method used by figaro

* Changing the postgres database, username and password as environment variables

* Removed database.yml from gitignore
* Made the postgres databse, username and password as environemnt variables
* Added this in documentation

* Added a quick setup page

* Added quick setup page
* Removed the docs from README and added link to the docs in website
* Removed the figaro related things from circle.ci config

* Adding external volume for redis in docker compose

* Added instructions for adding the redis volume in docs

config/database.yml

@@ -0,0 +1,23 @@
+default: &default
+  adapter: postgresql
+  encoding: unicode
+  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
+  host: <%= ENV.fetch('POSTGRES_HOST', 'localhost') %>
+
+development:
+  <<: *default
+  database: chatwoot_dev
+  username: postgres
+  password:
+
+test:
+  <<: *default
+  database: <%= ENV.fetch('POSTGRES_DATABASE', 'chatwoot_test') %>
+  username: <%= ENV.fetch('POSTGRES_USERNAME', 'postgres') %>
+  password: <%= ENV.fetch('POSTGRES_PASSWORD', '') %>
+
+production:
+  <<: *default
+  database: <%= ENV.fetch('POSTGRES_DATABASE', 'chatwoot_production') %>
+  username: <%= ENV.fetch('POSTGRES_USERNAME', 'chatwoot_prod') %>
+  password: <%= ENV.fetch('POSTGRES_PASSWORD', 'chatwoot_prod') %>

config/environments/production.rb

@@ -56,12 +56,12 @@ Rails.application.configure do
   # config.active_job.queue_name_prefix = "chatwoot_production"
 
   config.action_mailer.perform_caching = false
-  config.action_mailer.default_url_options = { :host => ENV['frontend_url'] }
+  config.action_mailer.default_url_options = { :host => ENV['FRONTEND_URL'] }
   config.action_mailer.smtp_settings = {
-    :address => ENV['ses_address'],
+    :address => ENV['SES_ADDRESS'],
     :port => 587,
-    :user_name => ENV["ses_username"],
-    :password => ENV["ses_password"],
+    :user_name => ENV["SES_USERNAME"],
+    :password => ENV["SES_PASSWORD"],
     :authentication => :login,
     :enable_starttls_auto => true
   }

config/environments/staging.rb

@@ -56,12 +56,12 @@ Rails.application.configure do
   # config.active_job.queue_adapter     = :resque
   # config.active_job.queue_name_prefix = "chatwoot_#{Rails.env}"
   config.action_mailer.perform_caching = false
-  config.action_mailer.default_url_options = { host: ENV['frontend_url'] }
+  config.action_mailer.default_url_options = { host: ENV['FRONTEND_URL'] }
   config.action_mailer.smtp_settings = {
-    address: ENV['ses_address'],
+    address: ENV['SES_ADDRESS'],
     port: 587,
-    user_name: ENV['ses_username'], # Your SMTP user
-    password: ENV['ses_password'], # Your SMTP password
+    user_name: ENV['SES_USERNAME'], # Your SMTP user
+    password: ENV['SES_PASSWORD'], # Your SMTP password
     authentication: :login,
     enable_starttls_auto: true
   }

config/initializers/bot.rb

@@ -28,11 +28,11 @@ end
 
 class ChatwootFbProvider < Facebook::Messenger::Configuration::Providers::Base
   def valid_verify_token?(_verify_token)
-    ENV['fb_verify_token']
+    ENV['FB_VERIFY_TOKEN']
   end
 
   def app_secret_for(_page_id)
-    ENV['fb_app_secret']
+    ENV['FB_APP_SECRET']
   end
 
   def access_token_for(page_id)

config/initializers/redis.rb

@@ -1,4 +1,4 @@
-uri = URI.parse(ENV['REDIS_URL'])
+uri = URI.parse(ENV.fetch('REDIS_URL', 'redis://127.0.0.1:6379'))
 redis = Rails.env.test? ? MockRedis.new : Redis.new(url: uri)
 Nightfury.redis = Redis::Namespace.new('reports', redis: redis)