#!/bin/sh
set -e

DOCKER_DIR="/mnt/data/docker"

if findmnt /var/lib/docker > /dev/null; then
    echo "[ERROR] Unable to reset Docker storage while /var/lib/docker is mounted"
    exit 1
fi

if [ -e "${DOCKER_DIR}" ]; then
    WIPED_DIR="${DOCKER_DIR}.wipe.$(date +%s)"
    echo "[INFO] Moving Docker storage to ${WIPED_DIR}"
    mv "${DOCKER_DIR}" "${WIPED_DIR}"
fi

# Leftovers are removed by docker-prepare if this is interrupted
echo "[INFO] Removing old Docker storage"
rm -rf "${DOCKER_DIR}".wipe.*