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PostgreSQL and pgAdmin

This example provides a base setup for using PostgreSQL and pgAdmin. More details on how to customize the installation and the compose file can be found here (PostgreSQL) and here (pgAdmin).

Project structure:

.
├── .env
├── compose.yaml
└── README.md

compose.yaml

services:
  postgres:
    image: postgres:latest
    ...
  pgadmin:
    image: dpage/pgadmin4:latest

Configuration

.env

Before deploying this setup, you need to configure the following values in the .env file.

  • POSTGRES_USER
  • POSTGRES_PW
  • POSTGRES_DB (can be default value)
  • PGADMIN_MAIL
  • PGADMIN_PW

Deploy with docker compose

When deploying this setup, the pgAdmin web interface will be available at port 5050 (e.g. http://localhost:5050).

$ docker compose up
Starting postgres ... done
Starting pgadmin ... done

Add postgres database to pgAdmin

After logging in with your credentials of the .env file, you can add your database to pgAdmin.

  1. Right-click "Servers" in the top-left corner and select "Create" -> "Server..."
  2. Name your connection
  3. Change to the "Connection" tab and add the connection details:
  • Hostname: "postgres" (this would normally be your IP address of the postgres database - however, docker can resolve this container ip by its name)
  • Port: "5432"
  • Maintenance Database: $POSTGRES_DB (see .env)
  • Username: $POSTGRES_USER (see .env)
  • Password: $POSTGRES_PW (see .env)

Expected result

Check containers are running:

$ docker ps
CONTAINER ID   IMAGE                           COMMAND                  CREATED             STATUS                 PORTS                                                                                  NAMES
849c5f48f784   postgres:latest                 "docker-entrypoint.s…"   9 minutes ago       Up 9 minutes           0.0.0.0:5432->5432/tcp, :::5432->5432/tcp                                              postgres
d3cde3b455ee   dpage/pgadmin4:latest           "/entrypoint.sh"         9 minutes ago       Up 9 minutes           443/tcp, 0.0.0.0:5050->80/tcp, :::5050->80/tcp                                         pgadmin

Stop the containers with

$ docker compose down
# To delete all data run:
$ docker compose down -v