Basic README

README.md

+# CASAnova on Docker
+
+Runs [CASAnova](https://web.archive.org/web/20070611110850fw_/http://nesa1.uni-siegen.de/softlab/download/CASAnova_Setup.exe), a 2007 Windows building energy simulation tool, via Wine on Ubuntu 24.04 in Docker. The GUI is accessible in a browser via noVNC.
+
+CASAnova was developed at [Uni Siegen - Fachegebiet Bauphysik & Solarenergie](https://web.archive.org/web/20070212105904/http://nesa1.uni-siegen.de/).
+
+## Requirements
+
+- Docker with Compose
+- `wget` (for downloading the installer)
+
+## Usage
+
+```bash
+make build    # Build the image (downloads installer if missing)
+make up logs  # Start the container and show the logs
+```
+
+Open <http://127.0.0.1:5800> in your browser.
+
+```bash
+make down    # Stop the container
+make logs    # Follow logs
+make status  # Show container state
+```