Merge branch 'docker-port' into 'main'

Add podman support to docker-build-env

See merge request docs/docs.beagleboard.io!77

docker-build-env.sh

 #!/bin/bash
-docker run --rm -it -v $(pwd):/build/docs.beagleboard.org:rw beagle/sphinx-build-env /bin/bash
+
+if command -v docker &> /dev/null
+then
+	CONTAINER_RUNTIME=docker
+elif command -v podman &> /dev/null
+then
+	CONTAINER_RUNTIME=podman
+else
+	echo "Failed to find docker or podman"
+	exit 1
+fi
+
+$CONTAINER_RUNTIME run --rm -it -v $(pwd):/build/docs.beagleboard.org:rw,z -p 8000:8000 beagle/sphinx-build-env /bin/bash