Postgres with docker-compose

What is docker compose file?

Docker compose file allows us to predefined images name and their properties to be pulled from the docker registry and run locally. In order to pull a docker image using the docker-compose file, we need to install the docker desktop on the local machine to use the docker command and view all the pulled images. 

• Docker desktop download:  https://docs.docker.com/desktop/

Create Docker Compose

First, we need to navigate into the project folder and create a file named docker-compose.yml

> cd project_folder

> touch docker-compose.yml

docker-compose.yml

  

    
    
    
    
  
services:
  postgres:
    container_name: postgres
    image :
     postgresenvironment:
      POSTGRES_USER: ${USERNAME}
      POSTGRES_PASSWORD : ${PASSWORD}
        PGDATA : /data/ postgres
       ports :
      - "5432:5432"   
    restart : unless-stopped

 

Run the command to pull docker image:

> docker compose up -d

 

After pulling the PostgreSQL image, we can connect to the PostgreSQL database via pre-defined properties.