Fix #9462

Docker-DCO-1.1-Signed-off-by: Zoltan Tombol <zoltan.tombol@gmail.com> (github: ztombol)

contrib/mkimage-arch.sh

@@ -36,7 +36,7 @@ expect <<EOF
 	}
 EOF
 
-arch-chroot $ROOTFS /bin/sh -c "haveged -w 1024; pacman-key --init; pkill haveged; pacman -Rs --noconfirm haveged; pacman-key --populate archlinux"
+arch-chroot $ROOTFS /bin/sh -c "haveged -w 1024; pacman-key --init; pkill haveged; pacman -Rs --noconfirm haveged; pacman-key --populate archlinux; pkill gpg-agent"
 arch-chroot $ROOTFS /bin/sh -c "ln -s /usr/share/zoneinfo/UTC /etc/localtime"
 echo 'en_US.UTF-8 UTF-8' > $ROOTFS/etc/locale.gen
 arch-chroot $ROOTFS locale-gen