Django not updated inside the docker cookiecutters template

My Django project that is created based on Cookiecutters is not updated in local development environment after I changed the source code, I need to stop and start the docker again. I checked the volume and it seems ok but still no auto-update. The files and their contents are as follow:

version: '3'

volumes:
  one_sell_local_postgres_data: {}
  one_sell_local_postgres_data_backups: {}

services:
  django: &django
    build:
      context: .
      dockerfile: ./compose/local/django/Dockerfile
    image: one_sell_local_django
    container_name: one_sell_local_django
    platform: linux/x86_64
    depends_on:
      - postgres
      - redis
    volumes:
      - .:/app
    env_file:
      - ./.envs/.local/.django
      - ./.envs/.local/.postgres
    ports:
      - "8000:8000"
    command: /start

  postgres:
    build:
      context: .
      dockerfile: ./compose/production/postgres/Dockerfile
    image: one_sell_production_postgres
    container_name: one_sell_local_postgres
    volumes:
      - one_sell_local_postgres_data:/var/lib/postgresql/data:Z
      - one_sell_local_postgres_data_backups:/backups:z
    env_file:
      - ./.envs/.local/.postgres

  redis:
    image: redis:6
    container_name: one_sell_local_redis

The Dockerfile for Django:

ARG PYTHON_VERSION=3.9-slim-bullseye

# define an alias for the specfic python version used in this file.
FROM python:${PYTHON_VERSION} as python

# Python build stage
FROM python as python-build-stage

ARG BUILD_ENVIRONMENT=local

# Install apt packages
RUN apt-get update && apt-get install --no-install-recommends -y \
  # dependencies for building Python packages
  build-essential \
  && apt-get install gdal-bin -y \
  # psycopg2 dependencies
  libpq-dev

# Requirements are installed here to ensure they will be cached.
COPY ./requirements .

# Create Python Dependency and Sub-Dependency Wheels.
RUN pip wheel --wheel-dir /usr/src/app/wheels  \
  -r ${BUILD_ENVIRONMENT}.txt


# Python 'run' stage
FROM python as python-run-stage

ARG BUILD_ENVIRONMENT=local
ARG APP_HOME=/app

ENV PYTHONUNBUFFERED 1
ENV PYTHONDONTWRITEBYTECODE 1
ENV BUILD_ENV ${BUILD_ENVIRONMENT}

WORKDIR ${APP_HOME}

# Install required system dependencies
RUN apt-get update && apt-get install --no-install-recommends -y \
  # psycopg2 dependencies
  libpq-dev \
  # Translations dependencies
  gettext \
  && apt-get install gdal-bin -y \
  # cleaning up unused files
  && apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false \
  && rm -rf /var/lib/apt/lists/*

# All absolute dir copies ignore workdir instruction. All relative dir copies are wrt to the workdir instruction
# copy python dependency wheels from python-build-stage
COPY --from=python-build-stage /usr/src/app/wheels  /wheels/

# use wheels to install python dependencies
RUN pip install --no-cache-dir --no-index --find-links=/wheels/ /wheels/* \
    && rm -rf /wheels/

COPY ./compose/production/django/entrypoint /entrypoint
RUN sed -i 's/\r$//g' /entrypoint
RUN chmod +x /entrypoint

COPY ./compose/local/django/start /start
RUN sed -i 's/\r$//g' /start
RUN chmod +x /start


COPY ./compose/local/django/celery/worker/start /start-celeryworker
RUN sed -i 's/\r$//g' /start-celeryworker
RUN chmod +x /start-celeryworker

COPY ./compose/local/django/celery/beat/start /start-celerybeat
RUN sed -i 's/\r$//g' /start-celerybeat
RUN chmod +x /start-celerybeat

COPY ./compose/local/django/celery/flower/start /start-flower
RUN sed -i 's/\r$//g' /start-flower
RUN chmod +x /start-flower


# copy application code to WORKDIR
COPY . ${APP_HOME}

ENTRYPOINT ["/entrypoint"]

The entrypoint:

#!/bin/bash

set -o errexit
set -o pipefail
set -o nounset



# N.B. If only .env files supported variable expansion...
export CELERY_BROKER_URL="${REDIS_URL}"


# if [ -z "${POSTGRES_USER}" ]; then
#     base_postgres_image_default_user='postgres'
#     export POSTGRES_USER="${base_postgres_image_default_user}"
# fi
export DATABASE_URL="postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}"
echo $DATABASE_URL
echo ${POSTGRES_DB}
postgres_ready() {
python << END
import sys

import psycopg2

try:
    psycopg2.connect(
        dbname="${POSTGRES_DB}",
        user="${POSTGRES_USER}",
        password="${POSTGRES_PASSWORD}",
        host="${POSTGRES_HOST}",
        port="${POSTGRES_PORT}",
    )
except psycopg2.OperationalError as e:
    print(e)
    sys.exit(-1)
sys.exit(0)

END
}
# TODO: here the postgres readiness should be checked
until postgres_ready; do
  >&2 echo 'Waiting for PostgreSQL to become available...'
  sleep 1
done
>&2 echo 'PostgreSQL is available'

exec "$@"

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