Roholt

#!/bin/bash
set -exou pipefail

# Location of the script (not the location from where it is executed from
THISDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"

DOCKER_VOLUME_DIR=volumes  # This is the directory docker mounts to
LOCAL_DOCKER_VOLUME_DIR=localvolumes # This is the directory you want to locally mount to.
INSIDE_CONTAINER_USER=1000

# Bindfs is required
APP=bindfs; [ -x "`which ${APP}`" ] || sudo apt install ${APP}

# Create local directory to map volume to.
[ ! -d ${THISDIR}/${LOCAL_DOCKER_VOLUME_DIR} ] && mkdir -p ${THISDIR}${LOCAL_DOCKER_VOLUME_DIR}

# Unmount if already mounted
sudo umount ${THISDIR}/${LOCAL_DOCKER_VOLUME_DIR} || true

# Bet local users group
GROUP=`id -g -n $USER`

# Mount
sudo bindfs -u $USER -g "$GROUP" --create-for-user=${INSIDE_CONTAINER_USER} --create-for-group=${INSIDE_CONTAINER_USER} ${THISDIR}/${DOCKER_VOLUME_DIR} ${THISDIR}/${LOCAL_DOCKER_VOLUME_DIR}

Based on https://www.fullstaq.com/knowledge-hub/blogs/docker-and-the-host-filesystem-owner-matching-problem