Since latest changes to the partition handling we need to add new dependency to the build host & docker (#4187)

config/templates/Dockerfile

@@ -49,6 +49,7 @@ RUN apt-get update \
        dwarves \
        f2fs-tools \
        fakeroot \
+       fdisk \
        flex \
        gawk \
        gcc-aarch64-linux-gnu \

lib/general.sh

@@ -1409,7 +1409,7 @@ prepare_host()
 	nfs-kernel-server ntpdate p7zip-full parted patchutils pigz pixz          \
 	pkg-config pv python3-dev python3-distutils qemu-user-static rsync swig   \
 	systemd-container u-boot-tools udev unzip uuid-dev wget whiptail zip      \
-	zlib1g-dev zstd"
+	zlib1g-dev zstd fdisk"
 
   if [[ $(dpkg --print-architecture) == amd64 ]]; then