Development Preview Environment Docker

Create on-demand preview environments with Docker for pull request testing and stakeholder review. This guide provides practical setup instructions and production-ready configurations for implementing this on your VPS infrastructure.

Installation and Setup

# Install the tool on your VPS
# Follow the official installation guide for your distribution
# Most tools support Docker-based deployment for easy setup

# Quick start with Docker
docker pull development-preview-environment-docker:latest
docker run -d --name development-preview-environment-docker -p 8080:8080 development-preview-environment-docker:latest

# Or install natively
curl -fsSL https://install.example.com | sh

Core Configuration

The primary configuration covers Docker Compose environments and dynamic port allocation setup. These form the foundation of a working deployment:

# Primary configuration file
# Adjust these settings based on your environment

# Enable core features
Docker Compose environments:
  enabled: true
  interval: 300  # seconds

# Configure dynamic port allocation
dynamic port allocation:
  enabled: true
  targets:
    - production
    - staging

# Authentication and security
auth:
  type: token
  token_file: /etc/secrets/api-token

automated cleanup Configuration

Setting up automated cleanup is essential for production reliability:

# Configure automated cleanup
# This ensures your setup handles production workloads correctly

# Key settings for automated cleanup:
# 1. Set appropriate resource limits
# 2. Configure health checks
# 3. Enable logging and monitoring
# 4. Set up backup and recovery

resources:
  limits:
    cpu: "2"
    memory: "2Gi"
  requests:
    cpu: "500m"
    memory: "512Mi"

healthCheck:
  enabled: true
  interval: 30s
  timeout: 10s

PR integration Integration

Integrating PR integration provides visibility into system health and performance:

# Set up monitoring and alerting
# Prometheus metrics endpoint
metrics:
  enabled: true
  port: 9090
  path: /metrics

# Alert rules
alerts:
  - name: HighErrorRate
    condition: error_rate > 0.05
    duration: 5m
    severity: critical
    notify:
      - slack
      - email

# Dashboard integration
# Import provided Grafana dashboards for visual monitoring

shared databases

• Security: Always use TLS for communication, rotate credentials regularly, and follow the principle of least privilege
• High availability: Run multiple instances behind a load balancer for production workloads
• Backup: Regularly back up configuration and state data
• Updates: Keep the tool updated for security patches and new features
• Documentation: Maintain runbooks for common operations and incident response

Production Deployment

# Systemd service for production
[Unit]
Description=Development Preview Environment Docker
After=network.target docker.service

[Service]
Type=simple
User=appuser
ExecStart=/usr/local/bin/development-preview-environment-docker serve --config /etc/development-preview-environment-docker/config.yaml
Restart=always
RestartSec=5
LimitNOFILE=65535

[Install]
WantedBy=multi-user.target

# Enable and start
sudo systemctl enable --now development-preview-environment-docker

Summary

This tool streamlines Docker Compose environments and dynamic port allocation workflows for DevOps teams. Self-hosting on a VPS provides full control, unlimited usage, and integration with your existing infrastructure. Start with the basic configuration, add monitoring early, and gradually adopt advanced features like PR integration and shared databases as your team matures its practices.