Pi-gen container exits in 0.288s after image build with no logs printed.
Default action input verbose-output=false suppresses pi-gen output;
flipping to true should show what build.sh trips on inside the container.
Log diagnosis on run 26130391965:
##[error]The process '/usr/bin/sudo' failed with exit code 100
Failure was inside the action's 'Installing build dependencies on host'
step. extra-host-dependencies: qemu-user-static binfmt-support broke
apt — possibly conflicting locks or the action's input handling.
tonistiigi/binfmt --install arm64 already registered qemu-aarch64 with
'flags: POCF' (F = kernel-resident static binary). That's enough; no
need for the inside-container qemu packages.
Host-side tonistiigi/binfmt registration doesn't propagate into the
pi-gen-action's nested Docker container's view of /proc/sys/fs/binfmt_misc.
usimd/pi-gen-action's extra-host-dependencies input runs apt-get inside
the pi-gen container before pi-gen launches — install qemu-user-static
+ binfmt-support there so the chroot's arm64 binaries can execute.
apt's qemu-user-static + update-binfmts produces a registration that
pi-gen's nested Docker container still couldn't see. Switch to the
canonical tonistiigi/binfmt approach: privileged container that
installs QEMU statically with the F (fix-binary) flag, so the kernel
opens the qemu-aarch64-static binary at registration time and uses it
for all subsequent arm64 execs — independent of which container the
exec happens in.
Plus diagnostic: ls /proc/sys/fs/binfmt_misc + cat qemu-aarch64
detail, so next run's log surfaces whether registration actually
landed.
docker/setup-qemu-action registers binfmt via a privileged side container;
pi-gen-action's own nested Docker container doesn't inherit the
registration. Result: arm64 ELFs in the pi-gen chroot still fail to
exec, exit 1 before any stage runs.
apt-installed qemu-user-static + binfmt-support writes persistent
binfmt_misc entries to the kernel that propagate to every container
share. Pair with update-binfmts --enable qemu-aarch64 and a sanity
ls -la /proc/sys/fs/binfmt_misc/qemu-aarch64.
Real cause of last pi-gen failure was surfaced by verbose-output:
WARNING: Only a native build environment is supported.
arm64: not supported on this machine/kernel
ubuntu-latest is x86_64; pi-gen builds an arm64 image and chroots into
it during stages, requiring binfmt_misc handlers for arm64. Add
docker/setup-qemu-action before the pi-gen step.
While here, audit + bump every action version (pinned to current
majors):
actions/checkout v4 → v6
actions/upload-artifact v4 → v7
actions/download-artifact v4 → v8
softprops/action-gh-release v2 → v3
docker/setup-qemu-action @v4 (new)
usimd/pi-gen-action @v1 (already current major)
dtolnay/rust-toolchain @stable (rolling channel — keep)
Reverts misdiagnosis. pi-gen defaults to trixie since the Debian 13
release, which has gtk4 4.14 + libwebkitgtk-6.0 stock — no backports
needed. Build container, kiosk gtk feature gate, and pi-gen target all
realigned to trixie.
Actual reason last image run failed: our custom stage was missing the
mandatory prerun.sh (pi-gen calls it to seed ROOTFS_DIR from the
previous stage) and the EXPORT_IMAGE marker file (signals 'bake an
image at the end of this stage'). Both added.
Asset upload now globs deploy/*.img.xz so any extra exports stage2
produces ship alongside our customised one.
Replaces release-kiosk.yml + release-image.yml with two coupled workflows:
release.yml — entrypoint. Computes version/channel/tag:
- master push → semver patch bump from latest stable tag, append
-dev.<shortsha>, create lightweight tag + prerelease record
- v* tag push → use tag verbatim, channel from suffix (-beta./-dev. or
stable), create release if missing
Then invokes build.yml via uses: ./.github/workflows/build.yml.
build.yml — reusable (workflow_call). Single source of truth for asset
production:
- kiosk binary matrix (aarch64, x86_64) in debian:trixie-slim
- flashable .img.xz via pi-gen using the aarch64 artifact (gated by
build-image input; master pushes default false to keep dev cycles
fast, tag pushes default true for a full release)
Both jobs attach to the release at tag_name=${{ inputs.tag }}.
Concurrency: master-branch runs cancel superseded peers; tag runs never
cancel. CI auto-import to a running BF server (BF_AUTOIMPORT_URL +
BF_AUTOIMPORT_API_KEY repo secrets) still wired.
