ansible skeleton, tweaking packer Docker build.

packer/Dockerfile

@@ -2,12 +2,14 @@
 FROM ubuntu:22.04
 LABEL org.opencontainers.image.authors=kyle@imap.cc
 
-RUN apt-get update && apt-get -y install git curl sudo
+RUN apt-get update && apt-get -y install git curl sudo xz-utils
 RUN git clone https://git.wntrmute.dev/kyle/bladerunner 
 RUN bladerunner/tools/install-go.sh
 
 ADD . packer
 WORKDIR packer
+VOLUME build
 RUN ./install-packer.sh
+WORKDIR build/packer-builder-arm
 
 ENTRYPOINT ["/usr/bin/env", "bash"]

packer/install-packer.sh

@@ -8,11 +8,12 @@ ARCH=amd64
 PACKER_FILE=packer_${PACKER_VERSION}_linux_${ARCH}
 UPSTREAM="https://github.com/mkaczanowski/packer-builder-arm"
 UPGRADE="false"
+BUILD_DIR="$(pwd)/build"
 
 prep () {
     sudo apt-get update && sudo apt-get -y install git unzip qemu-user-static e2fsprogs dosfstools 'bsdtar|libarchive-tools'
-    mkdir -p build
-    pushd build
+    mkdir -p ${BUILD_DIR}
+    pushd ${BUILD_DIR}
 }
 
 install_packer () {

packer/run-docker.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+IMAGE_TYPE="${1:-ubuntu}"
+PACKER_IMAGE_NAME="bladerunner/packer:latest"
+PACKER_BUILD_FILE=
+
+errmsg () {
+    echo "$@" > /dev/stderr
+}
+
+preflight () {
+    case "${IMAGE_TYPE}" in 
+    ubuntu) PACKER_BUILD_FILE="boards/raspberry-pi-4/ubuntu_server_20.04_arm64.json" ;;
+    raspbian) PACKER_BUILD_FILE="boards/raspberry-pi/raspios-lite-arm.json" ;;
+    custom)
+        PACKER_BUILD_FILE="${2:-}"
+        if [ -z "${PACKER_BUILD_FILE}" ]
+        then
+            errmsg "[!] custom board requires a board file path"
+            exit 1
+        fi
+        ;;
+    *)
+        errmsg "[!] invalid image type ${IMAGE_TYPE}."
+        errmsg "[!] valid image types are"
+        errmsg "    - raspbian"
+        errmsg "    - ubuntu"
+        errmsg "    - custom path/to/board/file"
+        exit 1
+        ;;
+    esac
+
+    if [ -z "$(docker image ls -q ${PACKER_IMAGE_NAME})" ]
+    then
+        docker image build -t "${PACKER_IMAGE_NAME}" .
+    fi
+
+}
+
+run_image () {
+    # privileged is required for loopback devices
+    docker run --privileged=true -i -t -v build:/packer/build -v /dev:/dev ${PACKER_IMAGE_NAME} -c "packer build ${PACKER_BUILD_FILE}"
+}
+
+preflight
+run_image