docker-freepbx/filesystem/entrypoint.sh

#!/bin/bash

appHooks() {
  : ${APP_RELINK:=false}

  if [ "$APP_RELINK" = "true" ]; then
  [ ! -z "${APP_CONF}" ] && relink_dir "${APP_CONF_DEFAULT}" "${APP_CONF}"
  [ ! -z "${APP_DATA}" ] && relink_dir "${APP_DATA_DEFAULT}" "${APP_DATA}"
  [ ! -z "${APP_LOGS}" ] && relink_dir "${APP_LOGS_DEFAULT}" "${APP_LOGS}"
  [ ! -z "${APP_TEMP}" ] && relink_dir "${APP_TEMP_DEFAULT}" "${APP_TEMP}"
  [ ! -z "${APP_WORK}" ] && relink_dir "${APP_WORK_DEFAULT}" "${APP_WORK}"
  [ ! -z "${APP_SHARED}" ] && relink_dir "${APP_SHARED_DEFAULT}" "${APP_SHARED}"
  else
    echo "=> Skipping APP directories relinking: APP_RELINK=$APP_RELINK"
  fi

  echo "=> Executing hooks:"
  . /entrypoint-hooks.sh
  echo "-------------------------------------------------------------------------------"
}

relink_dir() {
	local dir_default="$1"
	local dir_custom="$2"
	[ ! -e "$dir_default" ] && mkdir -p "$dir_default"
	[ ! -e "$(dirname "$dir_custom")" ] && mkdir -p "$(dirname "$dir_custom")"
	echo "Directory container override detected! default: $dir_default custom: $dir_custom"
	if [ ! -e "$dir_custom" ]; then
		echo -e -n "=> moving the $dir_default directory to $dir_custom ..."
		mv "$dir_default" "$dir_custom"
	else
		echo -e -n "=> directory $dir_custom already exist... "
		mv "$dir_default" "$dir_default".dist
	fi
	echo "linking $dir_custom into $dir_default"
	ln -s "$dir_custom" "$dir_default"
}

appHooks

: ${APP_RUNAS:=false}
: ${ENTRYPOINT_TINI:=false}
: ${MULTISERVICE:=false}

if [ "$MULTISERVICE" = "true" ]; then
    CMD="runsvdir -P /etc/service"
elif [ "$APP_RUNAS" = "true" ]; then
    CMD="runuser -p -u $APP_USR -- $@"
  else
    CMD="$@"
fi

[ "$ENTRYPOINT_TINI" = "true" ] && CMD="tini -g -- $CMD"

echo "=> Executing entrypoint command: $CMD"
echo "==============================================================================="
[ ! -z "$UMASK" ] && umask $UMASK
set -x

exec $CMD

exit $?