#!/bin/bash echo "Preparing the application..." # Create the Docker volume for PostgreSQL data persistence if it doesn't exist. docker volume create pgdata # Create the custom Docker network (if it already exists, an error is suppressed). docker network create app_network 2>/dev/null || echo "Network app_network already exists." # Build the Flask application image from the Dockerfile in the ./app folder. docker build -t flask_app_image ./app echo "Preparation completed."