Replace hardcoded IPs with environment variables for flexible network deployment

[Copilot]

The codebase had hardcoded IP addresses (192.168.10.2, 192.168.10.1) throughout configuration and API code, preventing deployment flexibility across local, private network, ZeroTier VPN, or public internet scenarios.

Changes

Configuration files

• All Docker Compose variants (docker-compose.yml, docker-compose.swarm.yml, stack.yml) now use environment variables for hosts and ports
• Defaults to localhost for local development; override via .env for other deployments

Python APIs

• API/app.py: Changed PUBLIC_BASE default from http://192.168.10.2 to http://localhost
• price-estimation/api/main.py: Removed hardcoded IP from ALLOW_ORIGINS default
• Both now read PUBLIC_BASE and ALLOW_ORIGINS from environment

Documentation

• .env.example: Template with 15+ network configuration variables
• NETWORK_SETUP.md: Setup examples for 5 deployment scenarios (local, LAN, ZeroTier, public, Swarm)
• mediamtx/mediamtx.yml.example: WebRTC configuration template
• README.md: Added network configuration section

Usage

# Local development (no config needed)
docker compose up --build

# Private network or ZeroTier
cp .env.example .env
# Edit .env:
FRONTEND_HOST=192.168.10.2
WORKER_HOST=192.168.10.1
PUBLIC_BASE=http://192.168.10.2
docker compose up --build

Key Variables

• FRONTEND_HOST, WORKER_HOST, API_HOST: Node hostnames/IPs
• *_PORT variables: All service ports (frontend, API, MediaMTX, YOLO, etc.)
• PUBLIC_BASE: Browser-accessible URL
• ALLOW_ORIGINS: CORS configuration

Original prompt

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This section details on the original issue you should resolve

<issue_title>Workaround network requests</issue_title>
<issue_description>Do we stay with virtual LAN Zero Tier, or we fully go through public ip addresses (something between both?)</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Workaround network requests #6

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