Dokku vs Tsuru vs CapRover: Self-Hosted Lightweight PaaS Platforms (2026)

Running your own Platform as a Service (PaaS) eliminates cloud hosting costs, gives you full data sovereignty, and puts you in complete control of your deployment pipeline. While enterprise-grade solutions like Coolify and Easypanel offer full-featured web GUIs, lightweight PaaS platforms like Dokku, Tsuru, and CapRover excel at simplicity, low resource usage, and single-server deployments.

This guide compares three of the most popular self-hosted lightweight PaaS platforms, examining their architecture, features, deployment models, and ideal use cases — so you can choose the right platform for your infrastructure needs.

What Is a Lightweight PaaS?

A lightweight PaaS provides Heroku-like deployment workflows on your own hardware: push code via Git, and the platform automatically builds, deploys, and manages your application. Unlike heavy Kubernetes-based platforms, these tools run on a single server with minimal overhead — often just 1-2 GB of RAM for the platform itself.

Key benefits of self-hosted lightweight PaaS:

• Zero vendor lock-in: Own your entire deployment stack
• Low cost: No per-deployment or per-minute charges
• Simple operations: Single-server setup vs. complex Kubernetes clusters
• Git-push deployment: Same developer experience as Heroku
• Plugin ecosystem: Databases, monitoring, TLS certificates via add-ons

For a broader comparison of GUI-based self-hosted PaaS options, see our Coolify vs CapRover vs Easypanel guide.

Quick Comparison Table

Dokku: The Heroku Clone

Dokku is the most popular lightweight PaaS with over 31,000 GitHub stars. It provides a Heroku-like experience on a single server, using Git push as the primary deployment mechanism.

Architecture

Dokku uses Docker containers and Heroku Buildpacks under the hood. When you push code, Dokku:

1. Detects the application language via buildpacks
2. Builds a Docker image from your source
3. Runs the image in a container
4. Routes traffic via Nginx

Installation

Dokku installs via a single bash script on any Ubuntu/Debian server:

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# Install Dokku on a fresh Ubuntu 22.04+ server
wget https://raw.githubusercontent.com/dokku/dokku/master/bootstrap.sh
sudo DOKKU_TAG=v0.35.0 bash bootstrap.sh

Deploying an Application

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# On your workstation
git remote add dokku dokku@your-server:myapp
git push dokku main

# On the server, create and configure
dokku apps:create myapp
dokku config:set myapp NODE_ENV=production
dokku proxy:ports-add myapp http:80:5000

Adding a Database

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# Install the Postgres plugin
sudo dokku plugin:install https://github.com/dokku/dokku-postgres.git

# Create and link database
dokku postgres:create mydb
dokku postgres:link mydb myapp
# DATABASE_URL is automatically set as an environment variable

Auto TLS

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dokku plugin:install https://github.com/dokku/dokku-letsencrypt.git
dokku config:set --no-restart myapp DOKKU_LETSENCRYPT_EMAIL=you@example.com
dokku letsencrypt:enable myapp

Pros and Cons

Pros:

• Largest community and plugin ecosystem
• Simplest setup — one command install
• Heroku buildpack compatibility means almost any language works
• Very low resource footprint (runs on 1 GB RAM)

Cons:

• Single-server only — no built-in horizontal scaling
• No web UI — everything is CLI-driven
• Limited built-in monitoring or logging

Tsuru: The Multi-Node PaaS

Tsuru is an extensible, multi-node PaaS built in Go. Unlike Dokku and CapRover, Tsuru supports multi-server clusters, making it suitable for larger teams and production workloads.

Architecture

Tsuru uses a scheduler-agnostic architecture:

• tsuru API server: Handles authentication, app management, and deployment
• tsuru router: Routes traffic to application containers (supports Traefik, Vulcand, HAProxy)
• Provisioner: Manages containers on nodes (Docker, Kubernetes supported)
• Event system: Audit logging and deployment history

Installation with Docker Compose

Tsuru provides an official Docker Compose setup:

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version: "3.8"
services:
  mongo:
    image: mongo:6
    ports:
      - "27017:27017"
    volumes:
      - mongo_data:/data/db
    restart: unless-stopped

  redis:
    image: redis:7-alpine
    ports:
      - "6379:6379"
    restart: unless-stopped

  tsuru:
    image: tsuru/api:latest
    ports:
      - "8080:8080"
    environment:
      - TSURU_DATABASE_URL=mongo://mongo:27019/tsuru
      - TSURU_REDIS_ADDR=redis:6379
    depends_on:
      - mongo
      - redis
    restart: unless-stopped

volumes:
  mongo_data:

Start the platform:

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docker compose up -d

Deploying an Application

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# Install tsuru CLI
curl -sSL https://packagecloud.io/install/repositories/tsuru/stable/script.deb.sh | sudo bash
sudo apt install tsuru-cli

# Create app and deploy
tsuru app-create myapp python
tsuru app-deploy -a myapp .

Multi-Node Scaling

Tsuru’s key advantage is multi-node support:

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# Add a new node to the cluster
tsuru node-add -I docker url=tcp://node2:2375

# Scale app across nodes
tsuru app-restart -a myapp

Pros and Cons

Pros:

• Multi-node cluster support for horizontal scaling
• Multiple provisioner backends (Docker, Kubernetes)
• Built-in event logging and audit trail
• Role-based access control out of the box

Cons:

• Higher resource requirements (4 GB+ RAM minimum)
• More complex setup and maintenance
• Smaller community than Dokku
• No built-in web UI

CapRover: The GUI PaaS

CapRover combines lightweight PaaS functionality with a built-in web dashboard, making it the most user-friendly option for developers who prefer visual management.

Architecture

CapRover runs as a Docker swarm on a single node:

• Captain container: Web UI and API
• Nginx reverse proxy: Automatic TLS and routing
• Docker engine: Application containers
• One-click apps: Pre-packaged database and service templates

Installation

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# Run on a fresh Ubuntu/Debian server (needs Docker installed)
docker run -p 80:80 -p 443:443 -p 3000:3000 -e ACCEPTED_TERMS=true \
  -v /var/run/docker.sock:/var/run/docker.sock \
  -v /captain:/captain caprover/caprover

Then visit http://your-server:3000 to complete setup via the web UI.

Deploying via CLI

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# Install CapRover CLI
npm install -g caprover

# Login and deploy
caprover servers:add
caprover deploy -a myapp -p ./my-app

One-Click Apps

CapRover ships with 150+ pre-configured applications including:

• PostgreSQL, MySQL, MongoDB, Redis
• WordPress, Ghost, Nextcloud
• Gitea, Registry, Vault

Install from the web UI with one click — no manual configuration needed.

Auto TLS

CapRover automatically obtains and renews Let’s Encrypt certificates for all deployed apps. Simply set your domain in the web UI and TLS is handled automatically.

Pros and Cons

Pros:

• Built-in web dashboard for visual management
• 150+ one-click app templates
• Automatic TLS with zero configuration
• Active community and regular releases

Cons:

• Single-server only (Docker swarm single-node mode)
• Less flexible than Dokku’s buildpack system
• Web UI dependency means it’s not purely CLI-driven

Which Should You Choose?

Choose Dokku If:

• You want the simplest possible setup
• You’re comfortable with CLI-only workflows
• You need maximum buildpack compatibility
• You’re deploying on a single VPS

Choose Tsuru If:

• You need multi-node clustering
• You have multiple teams sharing a platform
• You need role-based access control
• You might migrate to Kubernetes later

Choose CapRover If:

• You prefer a web-based management interface
• You want one-click app deployment
• You need automatic TLS without configuration
• You want the fastest path from zero to deployed apps

Deployment Best Practices

1. Use a dedicated server: PaaS platforms should run on their own server, not shared with other services
2. Set up automated backups: Backup app data, databases, and platform configuration regularly
3. Monitor resource usage: Single-server PaaS can become resource-constrained as you add more apps
4. Keep TLS automated: Always use Let’s Encrypt or equivalent — never deploy without HTTPS
5. Use a reverse proxy: For CapRover and Dokku, consider placing a dedicated reverse proxy in front for advanced routing

For reverse proxy setups, see our Nginx Proxy Manager vs SWAG vs Caddy guide for production-ready configurations.

FAQ

Can I run Dokku on a 1 GB VPS?

Yes, Dokku itself uses about 200-400 MB of RAM. A 1 GB VPS can comfortably run Dokku plus 2-3 small applications (like a Node.js API and a static site). For databases, add more RAM.

Does Tsuru support Kubernetes as a backend?

Yes, Tsuru has a Kubernetes provisioner. You can deploy Tsuru on a Kubernetes cluster and it will schedule application containers as Kubernetes pods, giving you all the benefits of K8s with Tsuru’s developer experience.

Can CapRover handle high-traffic production workloads?

CapRover can handle moderate production traffic on a single server. For high-traffic scenarios, you’d need to place it behind an external load balancer or migrate to a multi-node platform. CapRover’s strength is simplicity, not horizontal scaling.

How do I migrate apps from Heroku to Dokku?

Dokku is designed as a Heroku drop-in replacement. Push your code to Dokku via Git (just change the remote URL), and set the same environment variables. Most Heroku apps will work on Dokku without code changes, assuming you’re using supported buildpacks.

Do these platforms support Docker Compose deployments?

Dokku supports Dockerfile deployments and has a dokku-compose plugin for multi-container apps. Tsuru deploys Docker images and can handle multi-container setups via service templates. CapRover supports Dockerfile-based single-app deployments; for multi-container setups, use CapRover’s one-click app definitions.

How does auto-scaling work on these platforms?

Dokku and CapRover are single-server platforms and do not support horizontal auto-scaling. Tsuru supports multi-node clusters where you can manually add nodes and scale applications across them. None of these three platforms offer automatic elastic scaling — for that, you’d need Kubernetes.