Caddy: add git for xcaddy (#3657)

Author: MickLesk

install/caddy-install.sh

@@ -42,6 +42,7 @@ if [[ "${prompt,,}" =~ ^(y|yes)$ ]]; then
   msg_ok "Installed Golang"
 
   msg_info "Setup xCaddy"
+  $STD apt-get install -y git
   cd /opt
   RELEASE=$(curl -fsSL https://api.github.com/repos/caddyserver/xcaddy/releases/latest | grep "tag_name" | awk '{print substr($2, 2, length($2)-3) }')
   curl -fsSL "https://github.com/caddyserver/xcaddy/releases/download/${RELEASE}/xcaddy_${RELEASE:1}_linux_amd64.deb" -o $(basename "https://github.com/caddyserver/xcaddy/releases/download/${RELEASE}/xcaddy_${RELEASE:1}_linux_amd64.deb")