Overriding wagtail modeladmin templates in docker with windows and ubuntu

Question

I'm follow this article to override modeladmin template:

templates/modeladmin/app-name/model-name/

Overriding templates

It was overridded in windows 11 with docker, but not work in ubuntu.

I have no idea why have to use volumes to override modeladmin template and it was only work in windows?

It is also work in windows not use docker.

dockerfile

FROM python:3.8.1-slim-buster

RUN useradd wagtail

EXPOSE 8088

ENV PYTHONUNBUFFERED=1 \
    PORT=8088
RUN apt-get update --yes --quiet && apt-get install --yes --quiet --no-install-recommends \
    build-essential \
    libpq-dev \
    libmariadbclient-dev \
    libjpeg62-turbo-dev \
    zlib1g-dev \
    libwebp-dev \
 && rm -rf /var/lib/apt/lists/*

RUN pip install --upgrade pip
RUN pip install "gunicorn==20.0.4"

COPY requirements.txt /
RUN pip install -r /requirements.txt

WORKDIR /app


RUN chown wagtail:wagtail /app

COPY --chown=wagtail:wagtail . /app

USER wagtail

RUN python manage.py collectstatic --noinput --clear  --no-post-process

docker-compose.yml

version: '3.8'

services:
  web:
    build: .
    command: gunicorn web.wsgi:application --bind 0.0.0.0:8088
    volumes:
      - ./project/templates:/app/project/templates
    ports:
      - '8088:8088'

Can you give me some pointers about how to override it in ubuntu? thanks.