ghostscript is a dependency that needs to be installed

docs/index.md

@@ -542,7 +542,15 @@ $ /usr/bin/calibredb restore_database --really-do-it --with-library /opt/calibre
 ### Configure the Captive Portal
 
 When we connect to the Bibliotecha wireless access point, we will be directed
-to a splash page where we are introduced to the library. We need to set that up:
+to a splash page where we are introduced to the library.
+
+First make sure we have all dependencies:
+
+```bash
+$ apt install -y wget git ghostscript python3-venv
+```
+
+Then create a folder for our splash page:
 
 ```bash
 $ mkdir /var/www/bibliotecha
@@ -551,7 +559,6 @@ $ mkdir /var/www/bibliotecha
 And then we download the default page into location:
 
 ```bash
-$ apt install -y wget git python3-venv
 $ wget https://git.vvvvvvaria.org/varia/bibliotecha-captive-portal/raw/branch/master/index.html -O /var/www/bibliotecha/index.html
 ```