Syntax Highlighting in Ghost Blog

This is for my own reference as much as anything else.

1. Go here https://cdnjs.com/libraries/prism
2. Copy the CSS and JS for the features and theme you want
3. Add them as <link> or <script> as appropriate to your code injection section in the Ghost Blog Admin  (I put them in the footer)
4. Add the language to your Markdown code blocks

Code Injection Footer

<!-- Prism core and theme -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/prism.min.js" integrity="sha512-UOoJElONeUNzQbbKQbjldDf9MwOHqxNz49NNJJ1d90yp+X9edsHyJoAs6O4K19CZGaIdjI5ohK+O2y5lBTW6uQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/themes/prism-okaidia.min.css" integrity="sha512-5HvW0a7ihK3ro2KhwEksDHXgIezsTeZybZDIn8d8Y015Ny+t7QWSIjnlCTjFzlK7Klb604HLGjsNqU/i5mJLjQ==" crossorigin="anonymous" referrerpolicy="no-referrer" />

<!-- Prism language support -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-csharp.min.js" integrity="sha512-lNcWxx1oz89gefDhnB9knOCI/GcjlFNZq7ik92IA9AdKVamhge7Z9Ne3MSAim/wPdTrthGF0iQMs19z1WS9gFw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-css.min.js" integrity="sha512-mHqYW9rlMztkE8WFB6wIPNWOVtQO50GYBsBRMyA1CMk34zLJ6BrvVy3RVHoIIofugmnoNLGxkuePQ9VT2a3u8w==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-clike.min.js" integrity="sha512-QnaSDSqBZBMQgJc0jWB2AAWz+Vd4negxRunKXNzB5zm9vUb0AkDEP2jTFer9GjoIGeKMtRhwroj2AQ8+6+wTHQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-javascript.min.js" integrity="sha512-yvw5BDA/GQu8umskpIOBhX2pDLrdOiriaK4kVxtD28QEGLV5rscmCfDjkrx52tIgzLgwzs1FsALV6eYDpGnEkQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-markdown.min.js" integrity="sha512-4lQBgtc3AKPFSyFxc8Uaq6rz3VHwrSOdQxXtkJN9cS81ErTSoNSBxLDzWNYwwYryuvQpseKWiOmZdArMroqnLw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-go.min.js" integrity="sha512-19J5mMl3tkNptyMFkeBLHmdNi6f6l7quYk69/kiTgk4UNmxRCkdVCMkqPvoAQ7CE6fZQzz7Hp8VECXDpi7g5mw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-python.min.js" integrity="sha512-3qtI9+9JXi658yli19POddU1RouYtkTEhTHo6X5ilOvMiDfNvo6GIS6k2Ukrsx8MyaKSXeVrnIWeyH8G5EOyIQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/prism/9000.0.1/components/prism-bash.min.js" integrity="sha512-35RBtvuCKWANuRid6RXP2gYm4D5RMieVL/xbp6KiMXlIqgNrI7XRUh9HurE8lKHW4aRpC0TZU3ZfqG8qmQ35zA==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>

Markdown Sample

```csharp
public static void sayHello(){
 Console.WriteLine("Hello, world");
}
```

Displays as

 public static void sayHello(){
     Console.WriteLine("Hello, world");
 }