Render images in equally wide minipages with the same hight

equally-high-minipage-figures.tex

\newlength{\mycustomheight}
\settoheight{\mycustomheight}{\includegraphics[width=0.5\textwidth, keepaspectratio]{wider-image}}
% ^^^^^^^^^^^^ Note this cool trick guys! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
% Figures will have the same height though they are set in equally wide minipages :D
\begin{figure}
    \centering
        \begin{minipage}{0.5\textwidth}
            \centering
            \includegraphics[height=\mycustomheight{}, keepaspectratio]{narrower-image}
            \caption{Caption of narrow}
            \label{fig:narrow}    
        \end{minipage}
        \begin{minipage}{0.5\textwidth}
            \centering
            \includegraphics[height=\mycustomheight{}, keepaspectratio]{wider-image}
            \caption{Caption of wide}
            \label{fig:wide}
        \end{minipage}
\end{figure}