Docker Compose Seed Postgres

In this article, you will learn how to do Postgres seeding using Docker Compose.

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Video Link

Let’s Start Creating Docker Seeding

Hope you are familiar with “Docker-Compose”

Folder structure

├── docker-compose.yml (File)
├── docker_postgres_init.sql (File)
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Create a new file docker-compose.yml

Above file, we have created a Postgres Docker container with Port No: 5432

As well as set environment variables such as default username, password of Postgres container.

if you check the entire file we have also created volumes that point to the `docker_postgres_init.sql` file.

- ./docker_postgres_init.sql:/docker-entrypoint initdb.d/docker_postgres_init.sql

The script inside “docker_postgres_init.sql” will create a new table student and insert the records as well

When you run the following command in the root directory for the project.

docker-compose up

then you will see in the console docker_postgres_init.sql script will be executed as the following screenshot

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that means your script executed successfully.

How to test

For testing, we used Pgadmin4 configured already in the docker-compose file.

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Try to run the following URL in the browser


and enter username and password as the following screenshot.

password: test123!
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after successful login, you will see the following screen.

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Then click on to server -> create -> server

You will see the following pop up then in the General tab type

name: root_user

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Then click on the Connection tab as the following screenshot then input Hostname

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You can get Hostname by typing the following command

$ ifconfig |grep inet
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then type

Database: root

Username: root

Password: root

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then click on to Save Button

then you will see the connection successful on the left side of the Pgadmin 4 navigation as shown below.

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then go to Databases->root->Schema->Tables->students you will see there are 3 records as shown below in the screenshot.

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Thank you!

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