docs: start adding user roles to getting started documentation

Following CNCF guidelines for improved Backstage documentation.

Signed-off-by: Aramis <sennyeyaramis@gmail.com>

microsite/docusaurus.config.js

@@ -69,8 +69,8 @@ module.exports = {
     ],
   ],
   markdown: {
-    preprocessor({ fileContent }) {
-      // Replace all HTML comments with emtpy strings as these are not supported by MDXv2.
+    preprocessor({ filePath, fileContent }) {
+      // Replace all HTML comments with empty strings as these are not supported by MDXv2.
       return fileContent.replace(/<!--.*?-->/gs, '');
     },
     format: 'md',
@@ -152,6 +152,18 @@ module.exports = {
             from: '/docs/overview/glossary',
             to: '/docs/references/glossary',
           },
+          {
+            from: '/docs/getting-started/create-an-app',
+            to: '/docs/getting-started/standalone-install'
+          },
+          {
+            from: '/docs/getting-started/configuration',
+            to: '/docs/getting-started/standalone-install#next-steps'
+          },
+          {
+            from: '/docs/getting-started',
+            to: '/docs/getting-started/standalone-install'
+          },
         ],
       },
     ],

microsite/sidebars.json

@@ -40,18 +40,21 @@
       "overview/logos"
     ],
     "Getting Started": [
-      "getting-started/index",
-      "getting-started/configuration",
-      "getting-started/create-an-app",
+      "getting-started/standalone-install",
       {
         "type": "category",
-        "label": "App configuration",
+        "label": "Configuring Backstage (Admin)",
         "items": [
+          "getting-started/config/database",
+          "getting-started/config/authentication",
           "getting-started/configure-app-with-plugins",
           "getting-started/app-custom-theme",
           "getting-started/homepage"
         ]
       },
+      "getting-started/logging-in",
+      "getting-started/register-a-component",
+      "getting-started/create-a-component",
       "getting-started/keeping-backstage-updated",
       "getting-started/concepts",
       "getting-started/contributors",