Unable to Build Docker Image Using GitHub Actions - docker

Question

I'm currently trying to build a Docker image using GitHub Actions (CI). I can successfully build it on my machine and multiple other x86_64 architectures which I believe GitHub Actions also runs, but when building, I experience the following issue:
standard_init_linux.go:219: exec user process caused: exec format error
The command '/bin/sh -c apt-get update && apt-get install -y build-essential psmisc ifupdown omxplayer x11-xserver-utils xserver-xorg libraspberrypi0 libraspberrypi-dev raspberrypi-kernel-headers cec-utils libpng12-dev git-core wget --no-install-recommends && apt-get clean && rm -rf /var/lib/apt/*' returned a non-zero code: 1
I've searched multiple other threads here, but I wasn't able to find anything useful and I'm not quite sure what else to try. Any help or suggestions would be much appreciated.
Relevant Files:
This is the full build log
This is the Dockerfile
This is the CI file
This is the full repository

Answer 1

Your base image is invalid for amd64:
$ docker image inspect balenalib/raspberry-pi-debian-node:latest-jessie
...
"Architecture": "amd64",
...
$ docker run -it --rm balenalib/raspberry-pi-debian-node:latest-jessie /bin/bash
...
root#2eb37d8359ed:/# dpkg --print-architecture
armhf
That base image won't run on systems without qemu's binfmt_misc configured to run binaries for other platforms.
It's actually not a multi-platform base image at all, and instead is only designed to run on systems with qemu setup (note the media type is a manifest and not a manifest list):
$ regctl image manifest --list balenalib/raspberry-pi-debian-node:latest-jessie
{
"schemaVersion": 2,
"mediaType": "application/vnd.docker.distribution.manifest.v2+json",
"config": {
"mediaType": "application/vnd.docker.container.image.v1+json",
"size": 11726,
"digest": "sha256:5ec0839ecb046f260ad72751d0c4b08c7a085b147a519619e5a54876643a3231"
},
"layers": [
{
"mediaType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
"size": 40222636,
"digest": "sha256:d84b7435af12678c551b7489227b74c994981386b5bc4875ec512e11f28249c5"
},
And the image configuration has more pointers to qemu:
$ regctl image inspect balenalib/raspberry-pi-debian-node:latest-jessie
{
"created": "2019-05-02T22:50:58.241895826Z",
"architecture": "amd64",
"os": "linux",
"config": {
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"LC_ALL=C.UTF-8",
"DEBIAN_FRONTEND=noninteractive",
"UDEV=off",
"QEMU_CPU=arm1176",
"NODE_VERSION=11.14.0",
"YARN_VERSION=1.12.3"
],
This won't work on hosts without qemu's binfmt-misc setup. For building within a github action, you can use the setup qemu action:
- name: Set up QEMU
id: qemu
uses: docker/setup-qemu-action#v1
with:
image: tonistiigi/binfmt:latest
platforms: all