Add Algolia search bar

docusaurus.config.js

@@ -12,6 +12,29 @@ module.exports = {
   projectName: 'rancher-docs', // Usually your repo name.
   trailingSlash: false,
   themeConfig: {
+    algolia: {
+      // The application ID provided by Algolia
+      appId: 'YOUR_APP_ID',
+
+      // Public API key: it is safe to commit it
+      apiKey: 'YOUR_SEARCH_API_KEY',
+
+      indexName: 'YOUR_INDEX_NAME',
+
+      // Optional: see doc section below
+      contextualSearch: true,
+
+      // Optional: Specify domains where the navigation should occur through window.location instead on history.push. Useful when our Algolia config crawls multiple documentation sites and we want to navigate with window.location.href to them.
+      externalUrlRegex: 'external\\.com|domain\\.com',
+
+      // Optional: Algolia search parameters
+      searchParameters: {},
+
+      // Optional: path for search page that enabled by default (`false` to disable it)
+      searchPagePath: 'search',
+
+      //... other Algolia params
+    },
     colorMode: {
       // "light" | "dark"
       defaultMode: "light",