Can not generate migration inside Docker container

I have following docker-compose.yml config

version: "3.8"

services:
  postgres:
  image: postgres:13-alpine
  # restart: always
  volumes:
    - ./docker/db/data:${PGDATA:-/var/lib/postgresql/data}
  environment:
    POSTGRES_USER: root
    POSTGRES_PASSWORD: root
    # POSTGRES_DB: db
  ports:
  - 5432:5432
backend:
  build:
    context: backend
    target: dev
    dockerfile: Dockerfile
  volumes:
    - ./backend/:/src
  command: npm run start:dev
  ports:
  - "5000:3000"
  depends_on:
    - postgres
  environment:
    NODE_ENV: development
    DEBUG: nodejs-docker-express:*
    DB_SCHEMA: postgres
    DB_USER: root
    DB_PASSWORD: root
    DB_HOST: postgres
frontend:
  ports:
    - 3001:3000
  build:
    context: frontend
    dockerfile: Dockerfile
 # volumes:
  #   - ./frontend:/usr/src/app
  #   - /usr/src/app/node_modules
  #   - /usr/src/app/.next

networks:
  portfolio:
   driver: bridge

And my scripts in package.json are:

"scripts": {
"start:dev": "nodemon app.js",
"typeorm": "node --require ts-node/register ./node_modules/typeorm/cli.js"
 },

but for some reason when i run sudo docker exec <backend_container_id> --it typeorm migration:generate -n Entity i get

OCI runtime exec failed: exec failed: container_linux.go:380: starting container process caused: exec: "typeorm": executable file not found in $PATH: unknown

If i run just typeorm migration:generate if get

Error during migration generation:

Error: getaddrinfo EAI_AGAIN postgres at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:69:26) { errno: -3001, code: 'EAI_AGAIN', syscall: 'getaddrinfo', hostname: 'postgres' }