draw.io (formerly Diagramly) is free online diagram software. You can use it as a flowchart maker, network diagram software, to create UML online, as an ER diagram tool, to design database schema, to build BPMN online, as a circuit diagram maker, and more. draw.io can import .vsdx, Gliffy™ and Lucidchart™ files .
Heavy inspired by fjudith
docker run --rm -p 8080:8080 merhylstudio/draw.io
Start a web browser session to http://*ip*:8080/?offline=1&https=0
offline=1is a security feature that disables support of cloud storage.
https=0disable automatic usage of SSL