Updated install script

Author: andris9

install.sh

@@ -130,8 +130,15 @@ fi
 
 # Prepare Caddy
 apt install -y debian-keyring debian-archive-keyring apt-transport-https
-curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
-curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
+
+# Only add Caddy repository if not already configured
+if [ ! -f /usr/share/keyrings/caddy-stable-archive-keyring.gpg ]; then
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
+fi
+
+if [ ! -f /etc/apt/sources.list.d/caddy-stable.list ]; then
+    curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' | sudo tee /etc/apt/sources.list.d/caddy-stable.list
+fi
 
 # Install Redis and Caddy and required tools
 apt-get update