Updating installer to use Container element of security.config instead of having the contain in the host path

Author: Jeavon

build/transforms/security.config.install.xdt

@@ -4,10 +4,10 @@
     <service prefix="media/" name="CloudImageService" type="ImageProcessor.Web.Services.CloudImageService, ImageProcessor.Web" xdt:Locator="Match(prefix, name, type)" xdt:Transform="Remove" />
     <service prefix="media/" name="CloudImageService" type="ImageProcessor.Web.Services.CloudImageService, ImageProcessor.Web" xdt:Locator="Match(prefix, name, type)" xdt:Transform="InsertIfMissing">
       <settings xdt:Transform="InsertIfMissing">
-        <setting key="Container" value="" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing" />
+        <setting key="Container" value="media" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing" />
         <setting key="MaxBytes" value="8194304" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing" />
         <setting key="Timeout" value="30000" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing"/>
-        <setting key="Host" value="http://[myAccountName].blob.core.windows.net/media/" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing"/>
+        <setting key="Host" value="http://[myAccountName].blob.core.windows.net" xdt:Locator="Match(key)" xdt:Transform="InsertIfMissing"/>
       </settings>
     </service>
   </services>

src/UmbracoFileSystemProviders.Azure.Installer/InstallerController.cs

@@ -266,9 +266,17 @@ internal static bool SaveBlobPathToImageProcessorSecurityXdt(string xdtPath, str
                 return false;
             }
 
-            foreach (XmlElement setting in from XmlElement setting in rawSettings let key = setting.GetAttribute("key") where key == "Host" select setting)
+            foreach (XmlElement setting in from XmlElement setting in rawSettings select setting)
             {
-                setting.SetAttribute("value", $"{rootUrl}{containerName}/");
+                if (setting.GetAttribute("key").InvariantEquals("Host"))
+                {
+                    setting.SetAttribute("value", $"{rootUrl}");
+                }
+
+                if (setting.GetAttribute("key").InvariantEquals("Container"))
+                {
+                    setting.SetAttribute("value", $"{containerName}");
+                }
             }
 
             try