More info about GitLab integrations with OAuth

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

3 files changed, 45 insertions, 2 deletions

diff --git a/doc/integration/google_app.png b/doc/integration/google_app.png
new file mode 100644
index 00000000000..5a62ad35009
--- /dev/null
+++ b/doc/integration/google_app.png
diff --git a/doc/integration/oauth.md b/doc/integration/oauth.md
index bdbf99b4174..904c9157a04 100644
--- a/doc/integration/oauth.md
+++ b/doc/integration/oauth.md
@@ -1,12 +1,55 @@
+# OAuth
+
 You can use other services to log into GitLab via oAuth.
 
-Please configure this in gitlab.yml
+For this you need: 
+
+* create app in selected services
+* configure gitlab.yml 
+
+## Twitter:
 
 Below are screenshots how to setup your app on Twitter for this:
 
 ![Application details](twitter_app_details.png)
 ![API Keys](twitter_app_api_keys.png)
 
-And GitHub:
+## GitHub:
 
 ![GitHub app](github_app.png)
+
+## Google:
+
+![Google app](google_app.png)
+
+
+## GitLab config file
+
+Second step is to modify gitlab.yml with app credentials:
+
+```
+production:
+  ...
+
+  omniauth:
+    enabled: true
+  
+    providers:
+      - { 
+        name: 'twitter',
+        app_id: 'XXXXXXXX',
+        app_secret: 'XXXXXXXXXXXXXXXXXXXXXXXX'
+        }
+      - { 
+        name: 'google_oauth2',
+        app_id: 'XXXXXXXXXXX.apps.googleusercontent.com',
+        app_secret: 'XXXXXXXX'
+        }
+      - { 
+        name: 'github',
+        app_id: 'XXXXXXXXXX',
+        app_secret: 'XXXXXXXXXXXXXXXXXXXXXXXX'
+        }
+
+```
+
diff --git a/doc/integration/twitter_app_details.png b/doc/integration/twitter_app_details.png
index a4cb269df52..b95e8af8a74 100644
--- a/doc/integration/twitter_app_details.png
+++ b/doc/integration/twitter_app_details.png