#! /bin/sh

docker_tag="$1"
src_dir="$2"
dmsetup="$(which dmsetup)"
docker="$(which docker)"
export GOARCH="${GOARCH:-amd64}"

if [ -n "$dmsetup" ]; then
  # We will build using make
  make -C "$src_dir" build \
    && cp "${src_dir}/cadvisor" "./cadvisor-$GOARCH"
elif [ -n "$docker" ]; then
  # We will build using docker
  docker run --rm -it \
    -v "$(pwd)/${src_dir}:/go/src/github.com/google/cadvisor" \
    -e GOARCH="${GOARCH}" \
    "${docker_tag}-build-env" \
    make build \
    && cp "${src_dir}/cadvisor" "./cadvisor-$GOARCH"
else
  echo "Either install build dependencies (dmsetup) or Docker"
  exit 1
fi