Step-by-step: Add Connection in pgAdmin

1. Open pgAdmin You already have it open at http://localhost:5050 (based on your Docker setup).

2. Click “Add New Server” You’ll find it in the “Quick Links” section or by right-clicking on Servers → Register → Server.

3. In the dialog:

   General Tab

   • Name: Local Docker Postgres (or any name you like)

   Connection Tab

   • Host name / address: If pgAdmin and Postgres are in the same Docker Compose network (as in your docker-compose.yml), use the service name:

     postgres
     

     Don’t use localhost — pgAdmin inside Docker can’t see your host machine’s localhost; it communicates through the Docker network. You can use service_name (in docker), for example postgres

   • Port: 5432

   • Maintenance database: example_pgdb

   • Username: root

   • Password: postgres

   (These match your docker-compose environment variables.)

   Here is sample docker-compose.yml

   version: "3.9"
    services:
    postgres:
        image: "postgres"
        ports:
        - "5432:5432"
        environment:
        POSTGRES_PASSWORD: postgres
        POSTGRES_USER: root
        POSTGRES_DB: example_pgdb
   

4. Save Click Save — pgAdmin should now connect to your Postgres container.