Trying to execute Docker Postgres Code from a .sh file

Question

I'm having a problem with this.

Idea: I want to execute a sh file at the end of my Docker execution. The problem this:

sh file

source api/.env

sudo docker exec -it postgres_nuevo env PGPASSWORD="$DB_PASSWORD" psql -h "$DB_HOST" -p "$DB_PORT" -U "$DB_USER" -d "$DB_NAME"

and throw me this error: " to address: Try againtranslate host name "postgres_nuevo

I don't know what I'm doing wrong. The env variables are fine, I tested with a echo and hardcoded them it works. The problem is when you use .env vars.

I don't know if can help but here is my yml.

version: '3'
services:
  api:
    build:
      context: .
      dockerfile: Dockerfile
      args:
        GIT_BRANCH: ${GIT_BRANCH}
        GIT_USER: ${GIT_USER}
        GIT_PASS: ${GIT_PASS}
        GIT_REPO: ${GIT_REPO}
    container_name: api
    networks:
      - proxy-network
      - default
      - datalaketdf
    ports:
      - "${API_PORT}:8000"
    volumes:
      - .:/app
    depends_on:
      - postgres_nuevo
      - adminer
    command: >
      sh -c "
        python manage.py makemigrations;
        python manage.py migrate;
        python manage.py makemigrations datawarehouseApp;
        python manage.py migrate datawarehouseApp;
        python manage.py runserver 0.0.0.0:8000
      "
    restart: always

  postgres_nuevo:
    image: postgres:14.1-alpine
    restart: always
    networks:
      - proxy-network
      - datalaketdf
    container_name: postgres_nuevo
    environment:
      - POSTGRES_USER=${API_POSTGRES_USER}
      - POSTGRES_PASSWORD=${API_POSTGRES_PASSWORD}
      - POSTGRES_DB=${API_POSTGRES_DB}
    volumes:
      - db:/var/lib/postgresql/data
      - ./dumps:/dumps:rw
      - ${RUTA_BACKUPS_DUMPS_LOCAL}:/backups:rw
    ports:
      - "${POSTGRES_PORT}:5432"
    user: postgres

  adminer:
    image: adminer
    restart: always
    container_name: adminer
    networks:
      - proxy-network
      - datalaketdf
    ports:
      - ${ADMINER_PORT}:8080
    depends_on:
      - postgres_nuevo

volumes:
  db:
    driver: local

networks:
  proxy-network:
    external: true
  datalaketdf:
    external: true

Thanks