Maintaining up-to-date documentation is crucial for any software project, but manually updating diagrams and keeping documentation synchronized across platforms can be time-consuming and error-prone. This guide demonstrates how to automate the entire workflow using GitHub Actions to generate PlantUML diagrams directly in your repository’s README.md file and automatically synchronize the content to Confluence pages.

The Complete Automation Pipeline

The solution we’ll build consists of three main components: automatic PlantUML diagram generation from source files, embedding those diagrams into the README.md file, and synchronizing the updated content to Confluence. This approach ensures that your documentation stays current with every code change while maintaining consistency across platforms.