\documentclass[12pt,a4paper]{cd-cover}

\usepackage[utf8]{inputenc}
\usepackage[onehalfspacing]{setspace}
\usepackage{multicol}
\usepackage{mathpazo}
\usepackage{graphicx}
\usepackage{xcolor}
\usepackage[abs]{overpic}

\begin{document}

\parindent=10pt
\parskip=15pt
\CDbookletMargin=0pt

	\begin{bookletsheets}
		
		\begin{center}
		 
			 {\huge \sf GNU/Linux} \\
			 
			 \large \sf Xubuntu
		 	
		 	\sf \normalsize{ 20.04 LTS }
		 	
		 	\begin{figure}
		 	
		 		\centering
			 
				\vspace{-5mm}
		 		
		 		\begin{overpic}[abs,unit=1mm,scale=.10,grid=false,width=12cm]{couverture_boitier_cd_vert.jpg}
		 		
		 			\put(10,10){\color{black}\huge \sf GNU/Linux \large \sf Xubuntu}
		 			
		 		\end{overpic}
		 		
		 	\end{figure}
		 		
		\end{center}
	
	\end{bookletsheets}

\end{document}