Issue of ngnix with docker-compose

I am not able to setup my backend with ngnix.

I am using the same commands in docker-comppose.yml and mysite.template as shown in video

docker-compose.yml

version: '3'
services:
redis:
image: redis
networks:
- webnet
db:
image: postgres
volumes:
- ./pgdata:/var/lib/postgresql/data
networks:
- webnet
environment:
POSTGRES_PASSWORD: postgres
POSTGRES_USER: postgres
POSTGRES_DB: slack
ports:
- '3030:5432'
web:
image: slack-clone-server
networks:
- webnet
environment:
DB_HOST: db
REDIS_HOST: redis
depends_on:
- db
- redis
command: ['node', 'app.js']
nginx:
image: nginx
volumes:
- ./mysite.template:/etc/nginx/conf.d/mysite.template
ports:
- '8081:80'
networks:
- webnet
depends_on:
- web
command: /bin/bash -c "envsubst < /etc/nginx/conf.d/mysite.template > /etc/nginx/conf.d/default.conf && nginx -g 'daemon off;'"
networks:
webnet:

AND mysite.template

server {
location / {
proxy_pass http://web:8081;
}
}

I am getting ERROR : **cat: /etc/nginx/conf.d/mysite.template: Is a directory**
server_nginx_1 exited with code 1

Please help me anyone

Start with docker-compose.yml and mysite.template, then inspect the nginx service volume and command alongside the container logs showing that mysite.template is a directory. Run the compose setup and verify that nginx remains running and proxies requests to the web service through the configured port.

Written by the indexing model from the issue text.