I am new to using postgres database… and I as was trying to create a local database using postgres but I am not able to connect to it.

I have ran these brew commands to install them in my computer

brew install docker
brew install docker-compose
brew install daemon

This is my docker-compose.yml file

version: '3.2'

services:
  db:
    container_name: my_db
    image: "postgres"
    restart: always
    ports:
      - "5440:5432"
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
      - POS

when I try to connect it from main.go file it refuses to connect

Here are the attached images…
[enter image description here](https://i.sstatic.net/Fyt4ndeV.png)

I am not able to identify what am I doing wrong is there something that isn’t downloaded…