#!/bin/sh
set -e

# Apple container CLI on macOS, Docker CE on Linux.
case "$(uname -s)" in
    Darwin) CONTAINER_RUNTIME=container ;;
    Linux)  CONTAINER_RUNTIME=docker ;;
    *)      printf 'ERROR: unsupported platform %s\n' "$(uname -s)" >&2; exit 1 ;;
esac

mkdir -p out

$CONTAINER_RUNTIME build --build-arg HOST_UID=$(id -u) --build-arg HOST_GID=$(id -g) -t vpn-router-builder "$@" .
# Artifacts are streamed out as a tar archive, so no bind mount is needed.
$CONTAINER_RUNTIME run --rm vpn-router-builder tar -cf - -C /out . | tar -xf - -C out

echo "Build artifacts written to out/"