Why Run Docker on a UK VPS?

For UK developers and tech businesses, running Docker on a UK-based VPS offers a sweet spot between control, cost, and compliance. Unlike platform-as-a-service (PaaS) solutions like Heroku or Railway that mark up prices 3-5x, a Dockerized VPS gives you the same container orchestration at bare-metal prices — with the added benefit of UK data residency.

Who this guide is for: - SaaS founders running a UK business who want to keep customer data in the UK - Developers tired of Heroku's $50/mo dynos when a $12/mo VPS does the same job - Agencies hosting multiple client sites in isolated containers - DevOps engineers setting up CI/CD pipelines with UK-based build servers

What you'll learn: 1. How to provision a Hostingowy UK VPS with Docker pre-installed 2. Docker Compose for multi-container applications 3. Production-ready NGINX reverse proxy with SSL 4. CI/CD pipeline deployment 5. Monitoring and logging for containerized apps 6. Backup and disaster recovery strategies

---

1. Provisioning Your VPS

First, deploy a VPS instance. For Docker workloads, we recommend:

Plan	vCPU	RAM	Storage	Bandwidth	Best For
Starter	1 vCPU	1 GB	25 GB NVMe	1 TB	Side projects, single containers
Business	2 vCPU	4 GB	80 GB NVMe	4 TB	Production apps, 3-5 containers
Scale	4 vCPU	8 GB	160 GB NVMe	8 TB	Multi-service, CI/CD runners

Choose Ubuntu 24.04 LTS as the OS — it has the best Docker support and longest LTS window.

2. Installing Docker

Once your VPS is provisioned, SSH in:

ssh root@your-vps-ip

Install Docker using the official convenience script (or follow the manual steps on docs.docker.com):

curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh
sudo usermod -aG docker $USER

Log out and back in to apply the group change, then verify:

docker --version
docker run hello-world

Install Docker Compose:

sudo apt-get update
sudo apt-get install -y docker-compose-plugin
docker compose version

3. Configuring Your First Application

Let's set up a production-ready Node.js app with PostgreSQL using Docker Compose.

Create a project directory:

mkdir ~/myapp && cd ~/myapp

Create docker-compose.yml:

version: '3.8'
services:
  app:
    image: node:20-alpine
    working_dir: /app
    volumes:
      - ./app:/app
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
      - DATABASE_URL=postgresql://postgres:${DB_PASSWORD}@db:5432/myapp
    depends_on:
      - db
    command: sh -c "npm install && node server.js"
    restart: unless-stopped
db:
    image: postgres:16-alpine
    volumes:
      - postgres_data:/var/lib/postgresql/data
    environment:
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - POSTGRES_DB=myapp
    restart: unless-stopped
volumes:
  postgres_data:

Create an .env file:

DB_PASSWORD=$(openssl rand -base64 32)
echo "DB_PASSWORD=$DB_PASSWORD" > .env

Create app/server.js:

const express = require('express');
const { Pool } = require('pg');
const app = express();
const pool = new Pool({ connectionString: process.env.DATABASE_URL });
app.get('/', async (req, res) => {
  const result = await pool.query('SELECT NOW()');
  res.json({ status: 'ok', time: result.rows[0].now });
});
app.listen(3000, () => console.log('App running on port 3000'));

Start everything:

docker compose up -d
docker compose logs -f

Your app is now running at http://your-vps-ip:3000.

4. Production NGINX Reverse Proxy with SSL

Running on raw ports is fine for testing, but for production you need a reverse proxy with automatic SSL.

Create docker-compose.proxy.yml:

version: '3.8'
services:
  nginx:
    image: nginxproxy/nginx-proxy:latest
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - /var/run/docker.sock:/tmp/docker.sock:ro
      - ./certs:/etc/nginx/certs
      - ./vhost:/etc/nginx/vhost.d
      - ./html:/usr/share/nginx/html
    restart: unless-stopped
acme:
    image: nginxproxy/acme-companion:latest
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - ./certs:/etc/nginx/certs
      - ./vhost:/etc/nginx/vhost.d
      - ./html:/usr/share/nginx/html
      - ./acme:/etc/acme.sh
    environment:
      - DEFAULT_EMAIL=admin@yourdomain.com
    depends_on:
      - nginx
    restart: unless-stopped

Run alongside your app:

docker compose -f docker-compose.yml -f docker-compose.proxy.yml up -d

Now add environment variables to your app service:

environment:
  - VIRTUAL_HOST=app.yourdomain.com
  - LETSENCRYPT_HOST=app.yourdomain.com
  - LETSENCRYPT_EMAIL=admin@yourdomain.com

Restart and your app is live with HTTPS at https://app.yourdomain.com.

5. Setting Up CI/CD Deployment

For automated deployments from GitHub/GitLab, use this GitHub Actions workflow.

Create .github/workflows/deploy.yml:

name: Deploy to UK VPS
on:
  push:
    branches: [main]
jobs:
  deploy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
name: Build Docker image
        run: docker build -t myapp:latest .
name: Deploy via SSH
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.VPS_HOST }}
          username: ${{ secrets.VPS_USER }}
          key: ${{ secrets.VPS_SSH_KEY }}
          script: |
            cd ~/myapp
            git pull
            docker compose pull
            docker compose up -d --build
            docker system prune -f

Set your secrets in GitHub: VPS_HOST, VPS_USER, VPS_SSH_KEY.

6. Monitoring Your Docker VPS

Essential monitoring stack for a production Docker VPS:

Health Checks

# Check all containers
docker ps -a
View logs
docker compose logs -f --tail=100
Resource usage
docker stats
Disk usage
docker system df

cAdvisor + Prometheus (Optional)

# docker-compose.monitoring.yml
services:
  cadvisor:
    image: gcr.io/cadvisor/cadvisor:latest
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:ro
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro
    ports:
      - "8080:8080"
    restart: unless-stopped

Uptime Monitoring

Configure HTTP monitoring on your Hostingowy dashboard or use UptimeRobot (free tier) to check your app endpoint every 5 minutes.

7. Backup Strategy

Never lose container data. Set up automated backups:

#!/bin/bash
/usr/local/bin/docker-backup.sh
BACKUP_DIR="/var/backups/docker"
DATE=$(date +%Y-%m-%d)
Backup PostgreSQL volumes
docker run --rm -v myapp_postgres_data:/data -v $BACKUP_DIR:/backup alpine \
  tar czf /backup/postgres-$DATE.tar.gz -C /data .
Backup application data
docker run --rm -v myapp_app_data:/data -v $BACKUP_DIR:/backup alpine \
  tar czf /backup/app-$DATE.tar.gz -C /data .
Keep last 30 days, remove older
find $BACKUP_DIR -name "*.tar.gz" -mtime +30 -delete

Add to crontab:

0 3   * /usr/local/bin/docker-backup.sh

8. Why UK VPS + Docker Beats US Cloud Providers

Cost Comparison (Monthly)

Service	2 vCPU, 4 GB RAM	Notes
Hostingowy Business VPS	$12/mo	UK datacentre, NVMe, root access
DigitalOcean App Platform	$48/mo	No root access, limited Docker support
Heroku (Hobby)	$50/mo	Ephemeral storage, no Docker Compose
Railway	$36/mo	Good UX but 3x VPS cost
AWS ECS/Fargate	~$60/mo	Complex setup, surprise bills

Data Residency

All containers run on UK-based hypervisors. Your data never leaves UK jurisdiction. For GDPR-compliant SaaS operations, this eliminates the need for Data Transfer Agreements (DTAs) with US cloud providers.

Next Steps

1. Deploy your first VPS → — Takes 30 seconds
2. Read our Docker Cheat Sheet → — 15 commands you need daily
3. Compare Docker hosting plans → — From $5/mo Starter to $48/mo Scale

---

Need help setting up Docker on your UK VPS? Our support team is UK-based and responds within 30 minutes. Use the LAUNCH100 code for your first month free.