TemplateDoesNotExist at / index.html in Docker | react with django - reactjs

Question

Why my react build folder doesn't serve after run python manage.py collectstatic command in Dockerfile? I have tried for a long time to dockerized my whole project but I did fail to collect static files. Where I miss please have a look into it.
***This is my backend/Dockerfile inside django project ***
FROM python:3.9.5-slim
ENV PYTHONUNBUFFERED 1
RUN pip install --upgrade pip
RUN apt-get update && apt-get install build-essential python-dev -y
COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt && pip3 install uwsgi
WORKDIR /django
COPY . .
CMD ['RUN', 'python', 'manage.py', 'collectstatic', '--noinput']
EXPOSE 8000
CMD ["uwsgi", "--http", ":9090", "--wsgi-file", "IMS/wsgi.py", "--master", "--processes", "4", "--threads", "2"]
And this is my frontend/Dockerfile inside my react folder
FROM node:13.12.0-alpine
WORKDIR /react
COPY . .
RUN npm install
RUN npm run build
EXPOSE 3000
And finally, this is my docker-compose.yml file where I setup 3 services
version: "3.3"
services:
backend:
build:
context: ./backend/
command: gunicorn IMS.wsgi --bind 0.0.0.0:8000
container_name: ims-backend
restart: always
ports:
- "8000:8000"
networks:
- ims-network
ims-postgres:
image: "postgres:14beta2-alpine3.14"
restart: always
container_name: ims-postgres
hostname: emrdsaws.czlz2b677ytu.ap-south-1.rds.amazonaws.com
environment:
- POSTGRES_PASSWORD=zkf!%uW_?&UG%4
- POSTGRES_DB=imsrds
- POSTGRES_USER=dbrdsubuntume12
ports:
- 5432
frontend:
build:
context: ./frontend/
volumes:
- react_build:/react/build
expose:
- 3000
stdin_open: true
nginx:
image: nginx:latest
ports:
- "8080:8080"
volumes:
- ./nginx/nginx-setup.conf:/etc/nginx/conf.d/default.conf:ro
- react_build:/var/www/react
depends_on:
- backend
- frontend
- ims-postgres
volumes:
react_build:
networks:
ims-network:
driver: bridge