FROM stagex/busybox:sx2024.08.1@sha256:8cb9360041cd17e8df33c5cbc6c223875045c0c249254367ed7e0eb445720757 AS busybox FROM stagex/musl:sx2024.08.1@sha256:f888fcf45fabaaae3d0268bcec902ceb94edba7bf8d09ef6966ebb20e00b7127 AS musl FROM stagex/xorriso:sx2024.08.1@sha256:9ab45852aee077b68ea101173025be6e1cdbde93692efa4ee198e1960f02ab52 AS xorriso FROM stagex/syslinux:sx2024.08.1@sha256:909dcabcf13bd39b0138309f6efdeb780e01c00bf17cb1e7ee851e8b8be74d2b AS syslinux FROM stagex/cpio:sx2024.08.1@sha256:25afad810fbb9b1d02762030c3e43e07259a79627dbea9b66ef7f797f8377a2a AS cpio FROM stagex/linux-airgap:sx2024.08.1@sha256:a4fac3ca7795e171a4d1b3b634fdae1790d4f8d076f3c1ac8a38f3ece72e1ec5 AS linux-airgap FROM stagex/mtools:sx2024.08.1@sha256:b6202dc29906ea8d7594bce604cb676f5335cc51e75e3f12b5f619e8fc27cc28 AS mtools FROM stagex/xz:sx2024.08.1@sha256:f6ca72fc9096ef5f694b6b7f9b7ad323a571d9447eb5cc790042f72e69b9aad8 AS xz FROM stagex/eudev:sx2024.08.1@sha256:66020d28246af1d1e5f8fe3b5bca3da3cbfbd1f89cc1c616b7f8d13f61419026 AS eudev FROM stagex/ccid:sx2024.08.1@sha256:0f50ff4441d8b20ff73babab652fc0a563bce46385100240de4ae587012c9505 AS ccid FROM stagex/libusb:sx2024.08.1@sha256:c67807377fb18d2a874d975b43e37056eb4067a5be74ebf8c1f5e5ec65ae5650 AS libusb FROM stagex/keyfork:sx2024.08.1@sha256:bd6167d2a4a6c3b1c3f9c0accbb1fe0d5854f64997bd1d9d8d822cdf628f8baf AS keyfork FROM stagex/openpgp-card-tools:sx2024.08.1@sha256:088dbc336e34f16f7a8e323f114918468a7e4b13b190c43593ca7b0dffea54b4 AS openpgp-card-tools FROM stagex/gpg:sx2024.08.1@sha256:b5b0726171f66da437dbd24d2398cd324b96f00115770767b4f72df2547c5323 AS gpg FROM stagex/bash:sx2024.08.1@sha256:395e85b2f017c3fd30810d12eea5d59b015f6f5387f79bdec808ca01408cfe86 AS bash FROM stagex/grub:sx2024.08.1@sha256:5f382615881470e0cf9c670bead785507545a2b829b391247313f516c63355e3 AS grub FROM stagex/npth:sx2024.08.1@sha256:7899c399f2924c5ba0dfbce9ce6f8391e27ecd0564f0341fb85f83ba293e1ebe AS npth FROM stagex/libksba:sx2024.08.1@sha256:a5aac434ffd8fca96c435756fac9e300b3d06e04a15c707d09e5e8a16c0bcd89 AS libksba FROM stagex/libgpg-error:sx2024.08.1@sha256:e7e4797f38ba1a09ba700c91e2a5c99230f04f31e7961101a72d4e95f653f284 AS libgpg-error FROM stagex/libassuan:sx2024.08.1@sha256:1267bb842bcb6e8bff56e2b72599357605a5e141f76629f7e96187ae85a07197 AS libassuan FROM stagex/libgcrypt:sx2024.08.1@sha256:ea1906215d18688d96fc5329301af649834fe96c5eadda74c9d485623efb1f90 AS libgcrypt FROM stagex/jq:sx2024.08.1@sha256:0297a099ae95eed13d48bce2d4d624544857680095b6201e9919e1d5da45a6cd AS jq FROM stagex/yq:sx2024.08.1@sha256:10e80bd7cec3c6e0a7fd36c65bac13600368bff993ad42b03e3b787d2125e5f0 AS yq FROM stagex/bc:sx2024.08.1@sha256:1ecf6029ceed91dd62b08c64e49f00518edcf6c10ac4ab2fe7e8f71943607eef AS bc FROM stagex/zlib:sx2024.08.1@sha256:d0d6eef463a410191e086448c710441109ae72693cb074fe2b795ee033aa6c9d AS zlib FROM stagex/tpm2-tools:sx2024.08.1@sha256:1693d4ef7e0b7df3e9bd60088588d94b7f5bf755fde0c1be695f3c2f00ec2897 AS tpm2-tools FROM stagex/tpm2-tss:sx2024.08.1@sha256:5e362f43a5e0c49f774605a0e3e1b7523dc6bc775f537c206a3aaa8b8b733c93 AS tpm2-tss FROM stagex/openssl:sx2024.08.1@sha256:9bd55ed05263a538e6a23c0262edc356c998a24674f3b8ad008a4b117a4cdf3b AS openssl FROM stagex/sops:sx2024.08.1@sha256:7d8d51e41c7cab21b8ae75f557961f20405f727a21107d669080e3804d09665c AS sops FROM stagex/pcsc-lite:sx2024.08.1@sha256:fd9b0600f7f73f87d9d678b8b8a7119e0f9b9314c9959bd0d180c31736cb97d6 AS pcsc-lite FROM stagex/pcsc-tools:sx2024.08.1@sha256:d83997bda2b9500c8a4567df827a90d65efa842f9a2bb361b6f394589cf167d5 AS pcsc-tools FROM stagex/flashtools:sx2024.08.1@sha256:e2ac807475e66201ad50eee09bf9625ad0e97dc136818ff11775cb13a54d764b AS flashtools FROM stagex/libqrencode:sx2024.08.1@sha256:1927d17aaf1ad6a9910380714f0dd12c72c69f9ee1b19668bf4cc5f89cbc2b2d AS libqrencode FROM stagex/util-linux:sx2024.08.1@sha256:41525597d1f5648dc2318da7779e3c5194b4e6d24cb07f2f616ac539bb094d04 AS util-linux FROM stagex/opensc:sx2024.08.1@sha256:8da704d0078d445d3af0338764b9f3a87ba4841744c396c8eddef15466366553 AS opensc FROM scratch AS base ARG VERSION development ARG GIT_TIMESTAMP null ARG GIT_AUTHOR null ARG GIT_REF null ARG GIT_PUBKEY null COPY --from=busybox . / COPY --from=musl . / COPY --from=xorriso . / COPY --from=cpio . / COPY --from=mtools . / COPY --from=xz . / COPY --from=grub . / FROM base AS build ## Kernel COPY --from=linux-airgap /bzImage iso/boot/vmlinuz ## Initramfs COPY --from=busybox . initramfs COPY --from=eudev . initramfs COPY --from=musl . initramfs COPY --from=zlib . initramfs COPY --from=npth . initramfs COPY --from=libksba . initramfs COPY --from=libgpg-error . initramfs COPY --from=libassuan . initramfs COPY --from=libgcrypt . initramfs COPY --from=keyfork . initramfs COPY --from=bash . initramfs COPY --from=gpg . initramfs COPY --from=jq . initramfs COPY --from=yq . initramfs COPY --from=bc . initramfs COPY --from=flashtools . initramfs COPY --from=tpm2-tools . initramfs COPY --from=tpm2-tss . initramfs COPY --from=openssl . initramfs COPY --from=libusb . initramfs COPY --from=ccid . initramfs COPY --from=pcsc-lite . initramfs COPY --from=pcsc-tools . initramfs COPY --from=openpgp-card-tools . initramfs COPY --from=libqrencode . initramfs COPY --from=opensc . initramfs COPY --from=util-linux . initramfs COPY --from=sops . initramfs COPY rootfs/ initramfs COPY <<-EOF initramfs/etc/environment export VERSION="$VERSION" export GIT_TIMESTAMP="$GIT_TIMESTAMP" export GIT_AUTHOR="$GIT_AUTHOR" export GIT_REF="$GIT_REF" export GIT_PUBKEY="$GIT_PUBKEY" EOF RUN <<-EOF set -eux cd initramfs find . -exec touch -hcd "@0" "{}" + find . -print0 \ | sort -z \ | cpio \ --null \ --create \ --verbose \ --reproducible \ --format=newc \ | gzip --best \ > ../iso/boot/initramfs EOF ## Grub (EFI Boot) COPY config/grub.cfg iso/boot/grub/grub.cfg COPY config/grub_early.cfg grub_early.cfg RUN <<-EOF set -eux mkdir -p efi/boot grub-mkimage \ --config="grub_early.cfg" \ --prefix="/boot/grub" \ --output="efi/boot/bootx64.efi" \ --format="x86_64-efi" \ --compression="xz" \ all_video \ disk \ part_gpt \ part_msdos \ linux \ normal \ configfile \ search \ search_label \ efi_gop \ fat \ iso9660 \ gzio \ serial \ terminal find efi -exec touch -hcd "@0" "{}" + mformat -i iso/boot/grub/efi.img -C -f 1440 -N 0 :: mcopy -i iso/boot/grub/efi.img -ms efi :: touch -md "@0" iso/boot/grub/efi.img EOF ## Syslinux (BIOS Boot) COPY config/syslinux.cfg iso/boot/syslinux/ COPY --from=syslinux \ /usr/share/syslinux/isohdpfx.bin \ /usr/share/syslinux/isolinux.bin \ /usr/share/syslinux/ldlinux.c32 \ /usr/share/syslinux/libutil.c32 \ /usr/share/syslinux/libcom32.c32 \ /usr/share/syslinux/mboot.c32 \ iso/boot/syslinux/ ## Build Hybrid EFI/BIOS ISO FROM build AS install ENV SOURCE_DATE_EPOCH=1 # --set_all_file_dates='1' # --modification-date='1970010100000000' \ RUN <<-EOF set -eux find iso -exec touch -hcd "@0" "{}" + xorrisofs \ -output airgap.iso \ -full-iso9660-filenames \ -joliet \ -rational-rock \ -sysid LINUX \ -volid "airgap" \ -isohybrid-mbr iso/boot/syslinux/isohdpfx.bin \ -eltorito-boot boot/syslinux/isolinux.bin \ -eltorito-catalog boot/syslinux/boot.cat \ -no-emul-boot \ -boot-load-size 4 \ -boot-info-table \ -eltorito-alt-boot \ -e boot/grub/efi.img \ -no-emul-boot \ -isohybrid-gpt-basdat \ -follow-links \ iso/ EOF # Need sfdisk from util-linux COPY --from=util-linux . . RUN <<-EOF set -eux # Increase the size of the ISO by X MB to create space for the third partition dd if=/dev/zero bs=1M count=51 >> airgap.iso # Append a new partition that uses the additional space echo ", +" | sfdisk --append airgap.iso # Set the newly added third partition to FAT32 sfdisk --part-type airgap.iso 3 b # Calculate the byte offset of the third partition # This is done by finding the end of the first partition using fdisk, adding 1 sector, # and multiplying by 512 (since each sector is 512 bytes). OFFSET=$(fdisk -l airgap.iso | awk '/^airgap.iso1/ {print ($4 + 1) * 512}') echo "Calculated OFFSET: $OFFSET" # Format the third partition as FAT32 and label it 'USER' mformat -v USER -i airgap.iso@@$OFFSET :: EOF ## Minimal Autorun SD card image COPY sdcard sdcard RUN <<-EOF set -eux dd if=/dev/zero of=sdcard.img bs=1M count=32 mformat -v external -i sdcard.img :: mcopy -i sdcard.img -s sdcard/* :: EOF FROM scratch AS package COPY --from=install /sdcard.img / COPY --from=install /airgap.iso /