Configurable ports + proxy/tunnel documentation

[axadrn]

Problem

Deeploy currently requires ports 80/443 to be available. Users with existing services on those ports (nginx, Caddy, etc.) can't easily run deeploy alongside them.

Feedback from community:
"Ports 80, 443 open - Mostly gonna be an issue. Why can't we proxy?"

Research

Checked how Coolify and Dokploy handle this:

• Same limitation - they also require 80/443 or manual configuration
• Both recommend Cloudflare Tunnels as workaround
• No elegant automatic solution exists in the ecosystem

Proposed Solution

1. Configurable ports via .env (2 lines change)

docker-compose.yml

ports:
  - "${HTTP_PORT:-80}:80"
  - "${HTTPS_PORT:-443}:443"

User can then set in /opt/deeploy/.env:

HTTP_PORT=8080
HTTPS_PORT=8443

2. Documentation for

• Custom ports setup
• Cloudflare Tunnels setup

Important caveat (must be documented clearly)

Both options break deeploy's zero-config experience:

• Custom ports: User must manually configure their proxy for each domain
• Cloudflare Tunnels: User must manually add each domain in Cloudflare dashboard

The only fully automatic setup remains: dedicated VPS where deeploy owns ports 80/443.

Files to modify

• docker-compose.yml – add env var interpolation for ports
• docs/ – add "Running behind a proxy" guide
• docs/ – add "Cloudflare Tunnels" guide
• README.md – add note about dedicated VPS recommendation