1 FROM ubuntu:20.04 as ubuntu_focal
3 LABEL Description="ubuntu intermediate image"
7 && apt install -y wget genisoimage syslinux-common \
8 && mkdir -p /var/lib/tftpboot/grub \
9 && mkdir -p /var/lib/tftpboot/casper/ubuntu-focal-amd64/ \
10 && mkdir -p /var/lib/tftpboot/casper/ubuntu-focal-arm64/
12 ENV ISO_FOCAL_AMD64 https://releases.ubuntu.com/20.04.2/ubuntu-20.04.2-live-server-amd64.iso
13 ENV ISO_FOCAL_ARM64 https://cdimage.ubuntu.com/releases/20.04/release/ubuntu-20.04.2-live-server-arm64.iso
14 ENV EFI_FOCAL_AMD64 http://archive.ubuntu.com/ubuntu/dists/focal/main/uefi/grub2-amd64/current/grubnetx64.efi.signed
15 ENV EFI_FOCAL_ARM64 http://ports.ubuntu.com/ubuntu-ports/dists/focal/main/uefi/grub2-arm64/current/grubnetaa64.efi.signed
17 RUN echo "Preparing Grub EFI Binary" \
18 && wget $EFI_FOCAL_AMD64 -O /var/lib/tftpboot/grub/grubnetx64.efi.signed \
19 && wget $EFI_FOCAL_ARM64 -O /var/lib/tftpboot/grub/grubnetaa64.efi.signed
21 RUN echo "Preparing Casper Kernel" \
22 && wget $ISO_FOCAL_AMD64 -O /ubuntu-20.04.2-live-server-amd64.iso \
23 && isoinfo -i /ubuntu-20.04.2-live-server-amd64.iso -x "/CASPER/INITRD.;1" > /var/lib/tftpboot/casper/ubuntu-focal-amd64/initrd \
24 && isoinfo -i /ubuntu-20.04.2-live-server-amd64.iso -x "/CASPER/VMLINUZ.;1" > /var/lib/tftpboot/casper/ubuntu-focal-amd64/vmlinuz\
25 && wget $ISO_FOCAL_ARM64 -O /ubuntu-20.04.2-live-server-arm64.iso \
26 && isoinfo -i /ubuntu-20.04.2-live-server-arm64.iso -x "/CASPER/INITRD.;1" > /var/lib/tftpboot/casper/ubuntu-focal-arm64/initrd \
27 && isoinfo -i /ubuntu-20.04.2-live-server-arm64.iso -x "/CASPER/VMLINUZ.;1" > /var/lib/tftpboot/casper/ubuntu-focal-arm64/vmlinuz
32 LABEL Description="dnsmasq service image"
35 RUN apk add --update --no-cache dnsmasq \
36 && rm -rf /var/cache/apk/*
38 # Extract installer from previous image.
39 COPY --from=ubuntu_focal /var/lib/tftpboot /var/lib/tftpboot
42 COPY tftpboot/ /var/lib/tftpboot/
47 # Start dnsmasq. It picks up default configuration from /etc/dnsmasq.conf and
48 # /etc/default/dnsmasq plus any command line switch
49 ENTRYPOINT ["sh","-c","dnsmasq","--interface=$E_INT","--listen-address=$E_ADD"]