+ && isoinfo -i /ubuntu-20.04.2-live-server-arm64.iso -x "/CASPER/VMLINUZ.;1" > /var/lib/tftpboot/casper/ubuntu-focal-arm64/vmlinuz \
+ && wget $ISO_BIONIC_AMD64 -O /ubuntu-18.04.5-live-server-amd64.iso \
+ && isoinfo -i /ubuntu-18.04.5-live-server-amd64.iso -x "/CASPER/INITRD.;1" > /var/lib/tftpboot/casper/ubuntu-bionic-amd64/initrd \
+ && isoinfo -i /ubuntu-18.04.5-live-server-amd64.iso -x "/CASPER/VMLINUZ.;1" > /var/lib/tftpboot/casper/ubuntu-bionic-amd64/vmlinuz