Docker powered rpm-build (HACK that works for sbt-native-packager); put in your path and chmod +x

rpmbuild

#!/bin/bash

# silly little workaround to make rpmbuild work through docker

# Build the image if it doesn't already exist
if !(docker inspect rpm-build 2>/dev/null 1>/dev/null); then
  echo "rpm-build image does not exist; building"
  rm -rf /tmp/rpm-build
  mkdir -p /tmp/rpm-build
  cat <<-EOF > /tmp/rpm-build/Dockerfile
FROM centos:7

RUN yum install -y rpm-build && yum clean all

EOF
  cd /tmp/rpm-build
  docker build . -t rpm-build
  cd -
  rm -rf /tmp/rpm-build
fi

declare -a ALLARGS
ALLARGS+=("$@")
declare -a FOLDERS

while [ $# -gt 0 ]; do
  case "$1" in
    "_topdir "*)
      FOLDERS+=("${1:8}")
      ;;
  esac
  
  shift
done

declare -a VOLUME_ARGS

for f in "${FOLDERS[@]}"; do
  VOLUME_ARGS+=(-v $f:$f)
done

CMD="$(printf "cd %q; rpmbuild " $(pwd))" 
for a in "${ALLARGS[@]}"; do
  CMD="$CMD $(printf "%q" "$a")" 
done

set -x
docker run --rm -i "${VOLUME_ARGS[@]}" rpm-build bash -c "$CMD"