initial commit

Dockerfile

+FROM golang:buster AS builder
+RUN apt-get update -qq \
+ && apt-get install -qqy git 
+RUN git clone --depth 1 https://github.com/solo-io/packer-builder-arm-image /build
+WORKDIR /build
+RUN go build
+
+FROM debian:buster
+ENV PACKER_VERSION 1.3.5
+COPY --from=builder /build/packer-builder-arm-image /bin/packer-builder-arm-image
+RUN apt-get update -qq \
+ && DEBIAN_FRONTEND=noninteractive apt-get install -qqy \
+  qemu-user-static \
+  kpartx \
+  unzip \
+  sudo \
+  ansible \
+  python3-distutils \
+ && rm -rf /var/lib/apt/lists/*
+ADD https://releases.hashicorp.com/packer/${PACKER_VERSION}/packer_${PACKER_VERSION}_linux_amd64.zip /tmp/packer.zip
+RUN unzip /tmp/packer.zip -d /bin && rm /tmp/packer.zip
+WORKDIR /build
+ADD entrypoint.sh /entrypoint.sh
+ENTRYPOINT ["/entrypoint.sh"]

README.md

+# Packer ARM builder
+This Docker image can be used to build ARM images like Raspbian with Packer.
+
+## Usage
+```
+docker run --rm -v ${PWD}:/build -v ${PWD}/packer_cache:/build/packer_cache -v ${PWD}/output:/build/output -v /dev:/dev --privileged jangrewe/packer-arm:latest build my-image.json
+```
+
+- `my-image.json`:
+```
+{
+  "variables": {
+    "img_mount_path": "{{ env `PWD` }}/mnt",
+  },
+  "builders": [
+    {
+      "name": "my-image",
+      "type": "arm-image",
+      "iso_url": "https://downloads.raspberrypi.org/raspbian_lite/images/raspbian_lite-2019-09-30/2019-09-26-raspbian-buster-lite.zip",
+      "iso_checksum_type": "sha256",
+      "iso_checksum": "a50237c2f718bd8d806b96df5b9d2174ce8b789eda1f03434ed2213bbca6c6ff",
+      "mount_path": "{{ user `img_mount_path` }}",
+      "output_directory": "output"
+    }
+  ],
+  "provisioners": [
+    {
+      "type": "shell-local",
+      "inline": [
+        "sudo -E ANSIBLE_FORCE_COLOR=1 PYTHONUNBUFFERED=1 ansible-playbook -i '{{ user `img_mount_path` }}', -c chroot ./my-image.yml"
+      ]
+    }
+  ]
+}
+
+```
+- `my-image.yml`: a regular Ansible playbook
+
+## Thanks
+- [packer](https://packer.io)
+- [packer-builder-arm-image](https://github.com/solo-io/packer-builder-arm-image/)

entrypoint.sh

+#!/bin/bash
+/usr/sbin/update-binfmts --enable qemu-arm >/dev/null 2>&1
+/bin/packer $@