Added GitHub provider. Simplified FaceBook provider

docbook/reference/en/en-US/master.xml

@@ -10,6 +10,7 @@
                 <!ENTITY EAP6Adapter SYSTEM "modules/eap6-adapter.xml">
                 <!ENTITY SocialConfig SYSTEM "modules/social-config.xml">
                 <!ENTITY SocialFacebook SYSTEM "modules/social-facebook.xml">
+                <!ENTITY SocialGitHub SYSTEM "modules/social-github.xml">
                 <!ENTITY SocialGoogle SYSTEM "modules/social-google.xml">
                 <!ENTITY SocialTwitter SYSTEM "modules/social-twitter.xml">
                 <!ENTITY SocialProviderSPI SYSTEM "modules/social-spi.xml">
@@ -73,6 +74,7 @@
         </para>
         &SocialConfig;
         &SocialFacebook;
+        &SocialGitHub;
         &SocialGoogle;
         &SocialTwitter;
         &SocialProviderSPI;

docbook/reference/en/en-US/modules/social-github.xml

@@ -0,0 +1,27 @@
+<section id="social-github">
+    <title>GitHub</title>
+    <para>
+        To enable login with Google you first have to create an application in
+        <ulink url="https://github.com/settings/applications">GitHub Settings</ulink>. Then you need to copy
+        the client id and secret into the Keycloak Admin Console.
+    </para>
+    <orderedlist>
+        <listitem>
+            <para>
+                Log in to <ulink url="https://github.com/settings/applications">GitHub Settings</ulink>. Click the
+                <literal>Register new application</literal> button. Use any value for <literal>Application name</literal>,
+                <literal>Homepage URL</literal> and <literal>Application Description</literal> you want. In <literal>Authorization callback URL</literal>
+                enter the <link linkend="social-callbackurl">social callback url</link> for your realm. Click the
+                <literal>Register application</literal> button.
+            </para>
+        </listitem>
+        <listitem>
+            <para>
+                Copy <literal>Client ID</literal> and <literal>Client secret</literal> from the
+                <ulink url="https://github.com/settings/applications">GitHub Settings</ulink> into the settings
+                page in the Keycloak Admin Console as the <literal>Key</literal> and <literal>Secret</literal>. Then click
+                <literal>Save</literal> in the Keycloak Admin Console to enable login with Google.
+            </para>
+        </listitem>
+    </orderedlist>
+</section>