Add a new docker-compose service for our Next.js frontend application

[jhodapp]

Description

This PR adds a new docker-compose service for building/running our Next.js frontend application as a container. docker-compose build && docker-compose up will now start a complete application in 3 different containers.

GitHub Issue: #61

Changes

• Add a new service to docker-compose.yaml that defines the Next.js frontend application
• Can build a frontend image
• Can start a frontend container
• All 3 services run as a complete platform system

Testing Strategy

1. docker-compose build
2. docker-compose up
3. Visit http://localhost:3000/login and verify that the page loads
4. Try logging in and observe in the docker runtime log that the frontend tries to authenticate a non-existent user with the backend and fails

Context

I used the follow .env file to build the complete containerized system:

# PostgreSQL environment variables for local development
POSTGRES_USER=refactor  # Default PostgreSQL user for local development
POSTGRES_PASSWORD=password  # Default PostgreSQL password for local development
POSTGRES_DB=refactor  # Default PostgreSQL database for local development
POSTGRES_HOST=postgres  # The local Docker Compose PostgreSQL container hostname
POSTGRES_PORT=5432  # PostgreSQL default port for local development
POSTGRES_SCHEMA=refactor_platform  # PostgreSQL schema for the application
# Database connection URL for the Rust application
DATABASE_URL=postgres://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT}/${POSTGRES_DB}
# Rust application environment variables
SERVICE_INTERFACE=0.0.0.0
SERVICE_PORT=4000
NEXTJS_FRONTEND_PORT=3000

# App user configuration
USERNAME=appuser  # Username for the non-root user in the container
USER_UID=1000  # User ID for the appuser
USER_GID=1000  # Group ID for the appuser

Concerns

None