Merge pull request #101 from nghi01/Apptainer-documentation

Update Apptainer documentation for ClusterODM

Author: pierotofy

README.md

@@ -32,6 +32,12 @@ Or with docker:
 docker run --rm -ti -p 3000:3000 -p 8080:8080 opendronemap/clusterodm [parameters]
 ```
 
+Or with apptainer:
+
+```bash
+apptainer run docker://opendronemap/clusterodm [parameters]
+```
+
 Then connect to the CLI and connect new [NodeODM](https://github.com/OpenDroneMap/NodeODM) instances:
 
 ```bash