diff --git a/app/assets/images/btn_google_signin_light_normal_web@2x.png b/app/assets/images/btn_google_signin_light_normal_web@2x.png
new file mode 100644
index 0000000..c1e2c5c
Binary files /dev/null and b/app/assets/images/btn_google_signin_light_normal_web@2x.png differ
diff --git a/app/assets/images/btn_google_signin_light_pressed_web@2x.png b/app/assets/images/btn_google_signin_light_pressed_web@2x.png
new file mode 100644
index 0000000..d01521e
Binary files /dev/null and b/app/assets/images/btn_google_signin_light_pressed_web@2x.png differ
diff --git a/app/views/docs/index.html.haml b/app/views/docs/index.html.haml
index e687e58..0b3d9a8 100644
--- a/app/views/docs/index.html.haml
+++ b/app/views/docs/index.html.haml
@@ -1,5 +1,3 @@
-%p= link_to 'Login with Google', auth_at_provider_path(provider: :google)
-
--#
-  %h2 Something more helpful later
-  %p= raw(ap @doc)
+%p
+  = link_to auth_at_provider_path(provider: :google) do
+    = image_tag 'btn_google_signin_light_normal_web@2x.png', size: '50%'
diff --git a/config/initializers/sorcery.rb b/config/initializers/sorcery.rb
index 6a97688..a0ee973 100644
--- a/config/initializers/sorcery.rb
+++ b/config/initializers/sorcery.rb
@@ -130,7 +130,7 @@ Rails.application.config.sorcery.configure do |config|
 
   config.google.key = ENV["google_key"]
   config.google.secret = ENV["google_secret"]
-  config.google.callback_url = "http://localhost:3000/oauth/callback?provider=google"
+  config.google.callback_url = ENV["google_callback"]
   config.google.user_info_mapping = { email: "email", first_name: "given_name", last_name: "family_name" }
 
   # config.vk.key = ""