AUTH_HEADER="Authorization: Bearer $(gcloud auth print-access-token)"
  export AUTH_HEADER
fi

SIDECAR="${SIDECAR:-envoy}"

# OS-neutral vars. These currently only work for linux.
ISTIO_ENVOY_VERSION="${ISTIO_ENVOY_VERSION:-${PROXY_REPO_SHA}}"
ISTIO_ENVOY_DEBUG_URL="${ISTIO_ENVOY_DEBUG_URL:-${ISTIO_ENVOY_BASE_URL}/envoy-debug-${ISTIO_ENVOY_VERSION}${ISTIO_ENVOY_ARCH_SUFFIX}.tar.gz}"

parse_KUBECONFIG "${KUBECONFIG}"
if [[ "${FOR_BUILD_CONTAINER:-0}" -eq "1" ]]; then
  KUBECONFIG="${container_kubeconfig%?}"
fi

# LOCAL_OUT should point to architecture where we are currently running versus the desired.
# This is used when we need to run a build artifact during tests or later as part of another
# target.
if [[ "${FOR_BUILD_CONTAINER:-0}" -eq "1" ]]; then

    CLUSTER_KUBECONFIG="${KUBECONFIG_DIR}/${CLUSTER_NAME}"

    # Create the clusters.
    KUBECONFIG="${CLUSTER_KUBECONFIG}" setup_kind_cluster "${CLUSTER_NAME}" "${IMAGE}" "${CLUSTER_YAML}" "true" "false"

    # Kind currently supports getting a kubeconfig for internal or external usage. To simplify our tests,
    # its much simpler if we have a single kubeconfig that can be used internally and externally.

  echo "Environment variables not set. Make sure you run through the makefile (\`make init\`) rather than directly."
  exit 1
fi

# Gets the download command supported by the system (currently either curl or wget)
DOWNLOAD_COMMAND=""
function set_download_command () {
  # Try curl.
  if command -v curl > /dev/null; then
    if curl --version | grep Protocols  | grep https > /dev/null; then