Node 22 and year fix

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:20
+FROM node:22
 
 # Set working directory inside container
 WORKDIR /app

README.md

@@ -26,3 +26,9 @@ To download bookmeter json files there is a PHP script
 ```bash
 php download_posts.ph
 ```
+
+To compile production version execute this command:
+
+```bash
+bin/build
+```

index.html

@@ -132,7 +132,7 @@
                 </button>
             </div>
             <div class="d-block max-w-xs mr-2">
-                <label for="year-2025" class="p-2.5 inline-block">
+                <label for="year-2026" class="p-2.5 inline-block">
                     <input @input.debounce="updateFilter" x-model="year" type="checkbox" id="year-2026" value="2026"/> 2026
                 </label>
                 <label for="year-2025" class="p-2.5 inline-block">