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Install steps run in alphabetical order of the enabled plugin directory, so `apps`, `builder`, and `checks` read an app's environment before the `config` plugin had moved the `ENV` file to its new location. The read came back empty, so their deprecated `DOKKU_*` variables were never migrated to the matching plugin property and were never unset, with nothing reported either way: `dokku config:show` kept listing the variable while the plugin behaved as though it were unset. The relocation now runs before any deprecated variable is read, whatever the install order, and each old file is removed as soon as it has been drained rather than on a later install, which also covers the global file that was never removed at all. A file that reappears at the old path can only have been written by hand, so it is merged in with a warning naming its keys instead of being discarded.
Dokku Documentation
This documentation covers the installation, configuration, and usage of Dokku - a Docker-powered PaaS that provides a Heroku-like experience.
Getting Started
- Installation - Install Dokku on your server
- Advanced Installation - Custom installation options
- Upgrading - Upgrade to newer Dokku versions
- Uninstalling - Remove Dokku from your server
- Troubleshooting - Common issues and solutions
- Where to Get Help - Support resources
Deployment
- Application Deployment - Deploy your first app
- Application Management - Manage deployed applications
- Logs - View application logs
- Remote Commands - Run commands remotely
- User Management - Manage SSH access
- Zero Downtime Deploys - Deploy without interruption
Deployment Methods
Builders
- Builder Management - Configure build systems
- Buildpack Management - Manage buildpack settings
- Herokuish Buildpacks - Heroku-compatible buildpacks
- Cloud Native Buildpacks - CNB support
- Dockerfiles - Build from Dockerfile
- Nixpacks - Nixpacks builder
- Railpack - Railpack builder
- Lambda - Lambda-style functions
- Null Builder - Skip the build phase
Schedulers
- Scheduler Management - Configure schedulers
- Docker Local - Default Docker scheduler
- K3s - Lightweight Kubernetes
- Kubernetes - External Kubernetes clusters
- Nomad - HashiCorp Nomad
- Null Scheduler - Skip scheduling
Continuous Integration
- Generic CI - General CI/CD setup
- GitHub Actions
- GitLab CI
- Woodpecker CI
Configuration
- Environment Variables - Configure app environment
- Domains - Custom domain management
- SSL/TLS - HTTPS and certificates
Networking
- Proxy Management - Reverse proxy configuration
- Port Management - Port mapping and exposure
- DNS - DNS configuration
- Network - Docker network management
Proxies
Processes
- Process Management - Scale and manage processes
- Scheduled Cron Tasks - Scheduled jobs
- One-off Tasks - Run one-time commands
- Entering Containers - Access running containers
Advanced Usage
- Persistent Storage - Mount volumes
- Docker Options - Custom Docker run arguments
- Resource Management - CPU and memory limits
- Plugin Management - Install and manage plugins
- Registry Management - Docker registry integration
- Repository Management - Git repository settings
- Build Tracking - Inspect, cancel, and manage builds
- Deployment Tasks - Pre/post deploy hooks
- Event Logs - Dokku event history
- Backup and Recovery - Data backup strategies
Development
- Architecture - Internal architecture overview for contributors
- Plugin Creation - Build custom plugins
- Plugin Triggers - Available plugin hooks
- Testing - Test Dokku and plugins
- Release Process - How Dokku releases work
Community
Enterprise
- Dokku Pro - Commercial features and support
Appendices
Migration Guides
- 0.38.0
- 0.37.0
- 0.36.0
- 0.35.0
- 0.34.0
- 0.33.0
- 0.32.0
- 0.31.0
- 0.30.0
- 0.29.0
- 0.28.0
- 0.27.0
- 0.26.0
- 0.25.0
- 0.24.0
- 0.23.0
- 0.22.0
- 0.21.0
- 0.20.0
- 0.10.0
- 0.9.0
- 0.8.0
- 0.7.0
- 0.6.0
- 0.5.0
File Formats
- app.json - Application configuration
- Procfile - Process definitions
- Dockerfile - Docker build instructions
- .buildpacks - Buildpack configuration
- project.toml - CNB configuration
- nixpacks.toml - Nixpacks configuration
- railpack.json - Railpack configuration
- lambda.yml - Lambda configuration
- nginx.conf.sigil - Nginx template customization