mrcharles
ac82c22af3
draw.io (diagrams.net) is a client-side diagramming app. It has no user
model and no server-side state (diagrams live in the browser or cloud
storage), so this is the first package to use the Cloudron
authentication-proxy pattern: httpAuth.type=proxy gates access at the
platform edge — the admin restricts who can reach it and the browser
challenges for Cloudron credentials.
- Wraps the official jgraph/drawio:24.7.17 Tomcat image (pinned, verified)
- No database / no persistent storage; installs curl for the health check
- HTTP port 8080, health check on /
- Validated: docker build + run return HTTP 200, container healthy
Gardening: STATUS/README/JOURNAL updated (8/~57 packaged); new
"official-image wrapper + auth proxy" pattern documented in JOURNAL.
💘 Generated with Crush
Assisted-by: Crush:glm-5.2
draw.io Cloudron Package
Description
draw.io (diagrams.net) is a free, open-source, client-side diagramming
application for creating flowcharts, process diagrams, organizational charts,
UML, entity-relationship, network diagrams, and more. It runs entirely in the
browser; diagrams are stored in browser localStorage or exported / synced to
cloud storage providers (Google Drive, OneDrive, GitHub, GitLab, Dropbox).
This package wraps the official jgraph/drawio Docker image (Tomcat serving
draw.war).
Authentication
draw.io has no built-in user model — it is a stateless client-side tool.
This package therefore uses Cloudron's authentication proxy
(httpAuth.type = proxy in CloudronManifest.json). The Cloudron admin
restricts which platform users/groups may reach the app; authorized users are
challenged for their Cloudron credentials before the diagram editor loads.
This is the recommended pattern for utility apps without their own user directory.
Features
- Diagram Types: Flowcharts, BPMN, UML, ERD, network, AWS/Azure/GCP architecture, mind maps, org charts, floor plans, Venn, and more
- Shape Libraries: Hundreds of built-in stencils + custom shape import
- Export: PNG, JPEG, SVG, PDF, HTML, VSDX
- Cloud Sync: Google Drive, OneDrive, GitHub, GitLab, Dropbox, Trello
- Offline: Works fully offline; diagrams persist in the browser
- Collaboration: Real-time co-editing via Google Drive / Microsoft Teams
- Embed: Embed diagrams in Confluence, Jira, Notion, web pages
Configuration
Ports
- 8080: Tomcat HTTP (the only exposed port)
Environment Variables (optional)
draw.io runs out-of-the-box with no configuration. These are optional knobs:
| Variable | Purpose |
|---|---|
DRAWIO_BASE_URL |
Base URL for the deployment |
DRAWIO_SELF_CONTAINED |
1 to run fully self-contained (no external CDNs) |
PLANTUML_URL |
URL of a PlantUML server for UML rendering |
EXPORT_URL |
URL of a draw.io export server (for server-side PDF/PNG) |
DRAWIO_CSP_URL |
Content Security Policy allowlist |
Storage
- None required. draw.io is stateless. Diagrams live in the browser or in cloud storage. No Cloudron addons are used.
Usage
- Install the package on Cloudron.
- In the Cloudron access control, grant the desired users/groups access.
- Open the app location — you'll be prompted for Cloudron credentials.
- Start drawing. Save diagrams to browser, export to file, or connect a cloud storage provider for persistence.
Upstream
- Repository: https://github.com/jgraph/docker-drawio
- Image:
jgraph/drawio:24.7.17 - Website: https://www.drawio.com