#!/bin/bash
#
# Copyright 2019 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -euo pipefail

docker_run () {
  local cmd="$1"
  local tar="$2"
  local image="$3"

  docker run --rm  \
    --mount "type=bind,source=$PWD/${tar},destination=/rpms.tar,readonly" \
    "${image}" \
    bash -c "tar -C root -xvf /rpms.tar && ${cmd}"
}
OUT="$1"
shift

docker_run "$@" > $OUT

exit $?