#!/bin/bash

PROG=$(basename $0)

HELP=$(echo "$*" | grep "\-h" | wc -w)

if [ $HELP -ne 0 ]; then
  echo "usage: $PROG <remote-registry>..."
  exit 1
fi

LINE="DOCKER_OPTS=\"\$DOCKER_OPTS --insecure-registry $1\""

OUT=$(tempfile)
cat /etc/default/docker >> $OUT
CHANGED=0
while [ $# -gt 0 ]; do
  FOUND=$(grep "$LINE" /etc/default/docker | wc -l)
  if [ $FOUND -eq 0 ]; then
    echo "DOCKER_OPTS=\"\$DOCKER_OPTS --insecure-registry $1\"" >> $OUT
    CHANGED=1
  fi
  shift
done

if [ $CHANGED -eq 1 ]; then
  sudo cp $OUT /etc/default/docker
  sudo service docker restart
fi
rm -f $OUT