Move production to postgres

Gemfile

@@ -5,6 +5,7 @@ source 'https://rubygems.org'
 gem 'rails', '4.2.6'
 gem 'sqlite3'
 gem 'mysql2', '~> 0.3.18'
+gem 'pg', '~> 0.18.4'
 gem 'sass-rails', '~> 5.0'
 gem 'uglifier', '>= 1.3.0'
 

Gemfile.lock

@@ -121,6 +121,7 @@ GEM
       shellany (~> 0.0)
     parslet (1.7.1)
       blankslate (>= 2.0, <= 4.0)
+    pg (0.18.4)
     pry (0.10.3)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
@@ -235,6 +236,7 @@ DEPENDENCIES
   jbuilder (~> 2.4)
   jquery-rails (~> 4.1.0)
   mysql2 (~> 0.3.18)
+  pg (~> 0.18.4)
   rails (= 4.2.6)
   rspec-rails (~> 3.4.0)
   sass-rails (~> 5.0)

config/database.yml

@@ -30,10 +30,10 @@ docker:
   database: parsley
 
 production:
-  adapter: mysql2
+  adapter: pg
   pool: 5
   timeout: 5000
   host: <%= ENV['PARSLEY_DB_HOST'] || 'mysql' %>
   username: <%= ENV['PARSLEY_DB_USER'] || 'parsley_user' %>
-  password: <%= ENV['PARSLEY_DB_PASSWORD'] || 'parsley_password' %>
+  password: <%= ENV['PARSLEY_PG_PASSWORD'] || 'parsley_password' %>
   database: <%= ENV['PARSLEY_DB_NAME'] || 'parsley' %>