In this tutorial we are going to learn how to connect Django application to a PostgreSQL database using Docker container while developing the django application. To get started we are going to follow the steps below:

• Step 1 - Create a PostgreSQL database using docker
• Step 2 - Install pgAdmin
• Step 3 - Create a django project
• Step 4 - Configure postgreSQL to django
• Step 5 - Run the django application
• Step 6 - Create a simple model
• Step 7 - Migrate the schema
• Step 8 - Run the migrations
• Step 9 - See the changes in the database
• Step 10 - Run the django application
• Step 11 - Deploy the django application to Heroku

Step 1 - Create a PostgreSQL database using docker

First we're goning to create a PostgreSQL database using docker. You can also download the postgreSQL binary from here and use it to create a PostgreSQL database.

But in our case we are going to use a docker container to create a PostgreSQL database. To create the PostgreSQL database we are going to use the following docker command:

docker run --name postgres -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=postgres -d postgres:10-alpine

It will download the latest version of PostgreSQL 10 and create a database named postgres and a user named postgres with password postgres and run it in detached mode. If you want to it in interace mode you can run it like this:

docker run --name postgres -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=postgres -i -t postgres:10-alpine