#!/usr/bin/env bash

set -eu

if [ $# -ne 0 ]; then
    echo "no arguments allowed for ${0##*/}, given: $*" >&2
    exit 64
fi

bindir=$( cd "${BASH_SOURCE[0]%/*}" && pwd )
rootdir=$( cd "$bindir"/.. && pwd )

# shellcheck source=_docker.sh
. "$bindir"/_docker.sh
# shellcheck source=_tag.sh
. "$bindir"/_tag.sh

dockerfile=$rootdir/Dockerfile-proxy

get_extra_options() {
    options=
    for var in http_proxy https_proxy no_proxy; do
        [ -z "${!var:-}" ] || options="$options --build-arg '$var=${!var}'"
    done
    echo "$options"
}

tag=$(head_root_tag)
# We want wordsplit for the extra options here:
# shellcheck disable=SC2046
docker_build proxy "$tag" "$dockerfile" \
  --build-arg "LINKERD_VERSION=$tag" \
  $(get_extra_options)