docs: update features to add WebSub and polish language + add exif requirements to install

closes #185

docs/src/getting-started/install.md

@@ -23,6 +23,7 @@ PHP version 8.0 or higher is required, with the following extensions installed:
 - [mbstring](https://php.net/manual/en/mbstring.installation.php)
 - [gd](https://www.php.net/manual/en/image.installation.php) with **JPEG**,
   **PNG** and **WEBP** libraries.
+- [exif](https://www.php.net/manual/en/exif.installation.php)
 
 Additionally, make sure that the following extensions are enabled in your PHP:
 
@@ -155,7 +156,7 @@ Docker<svg viewBox="0 0 24 24" width="1em" height="1em" class="text-xl text-pine
 
 ::: info Note
 
-Given high demand for docker, we are planning on maintaining an official Docker
+Given high demand for docker, we plan on maintaining an official Castopod Docker
 image directly into the Castopod repository.
 
 :::

docs/src/index.md

@@ -43,19 +43,22 @@ podcasters around the world!
   - 📱  PWA: install as a standalone app
   - 🎨  Customizable theme colors
   - 🎬  Generate ready-to-share Video clips from episodes
-  - 🎵  Generate Soundbites
+  - 🔉  Generate soundbites
   - ▶️  Embeddable player, embed your episodes on any website
-- 💸  Monetization
+- 💸  Monetization:
   - 🔗  Funding links
   - 📲  listen-to-click ads
   - 🤝  value4value / WebMonetization
-- 📡  Publish and broadcast everywhere with RSS: Podcast Index, Apple
-  Podcasts, Spotify, Google Podcasts, Deezer, Podcast Addict, Podfriend, …
+- 📡  Publish your episodes everywhere with RSS:
+  - 📱  On all indexes and apps: Podcast Index, Apple Podcasts, Spotify,
+    Google Podcasts, Deezer, Podcast Addict, Podfriend, …
+  - ⚡  Broadcast your episodes instantly with WebSub
 - 📥  Podcast import: move your existing podcast into Castopod
 - 📤  Move your podcast out of Castopod
 - 🔀  Multi-tenant: host as many podcasts as you want
 - 👥  Multi-user: add contributors and set roles
-- 🌎  i18n support: translated in English & French, and more to come!
+- 🌎  i18n support: translated in English, French & Polish with more to
+  come!
 
 ## Motivation