Fix jd2 cfg download

(cherry picked from commit d30c69f5d112938105dc4bce7f7f716483947423)

install/jdownloader2-install.sh

@@ -27,9 +27,9 @@ msg_ok "Installed Dependencies"
 
 msg_info "Installing JDownloader2"
 mkdir -p /app/cfg
-$STD git clone https://github.com/jlesage/docker-jdownloader-2
-mv ./docker-jdownloader2/rootfs/defaults/cfg/* /app/cfg/
-rm -rf ./docker-jdownloader2
+$STD git clone https://github.com/jlesage/docker-jdownloader-2 /root/djd2
+mv /root/djd2/rootfs/defaults/cfg/* /app/cfg/
+rm -rf /root/djd2
 wget -Oq - http://installer.jdownloader.org/JDownloader.jar > /app/JDownloader.jar
 msg_ok "Installed JDownloader2"