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Container Structure

Overview

This document outlines the directory structure of the UDX Worker container and how to place application code in child images.

When To Use

Use this when you need to:

  • Understand where worker internals live.
  • Build child images without breaking worker paths.

Key Concepts

  • Worker directories must be preserved.
  • Application code should live in language-standard paths.

Examples

Base Directory Structure

/
├── opt/worker/           # Base directory for worker-specific files
│   ├── apps/            # Worker applications and plugins
│   └── data/            # Worker data storage and processing
├── etc/worker/          # Worker configuration files
├── usr/local/worker/
│   ├── bin/            # Worker executable files
│   ├── lib/            # Worker library files
│   └── etc/            # Additional worker configuration
└── usr/local/configs/   # Cloud provider configurations
    ├── gcloud/         # Google Cloud SDK config
    ├── aws/            # AWS CLI config
    └── azure/          # Azure CLI config

Child Image Placement

PHP:

/
├── var/www/           # PHP application code
└── opt/worker/        # Worker directories (preserved)

Node.js:

/
├── usr/src/app/      # Node.js application code
└── opt/worker/       # Worker directories (preserved)

Python:

/
├── usr/src/app/      # Python application code
└── opt/worker/       # Worker directories (preserved)

Common Pitfalls

  • Modifying or removing worker directories.
  • Storing application code under /opt/worker.

Related Docs

  • docs/development/child-images.md
  • docs/deploy/README.md