add podman speedtest

active/podman_speedtest/speedtest.md

@@ -0,0 +1,9 @@
+# Speedtest
+
+<https://github.com/librespeed/speedtest/blob/master/doc_docker.md>
+
+## Install with Podman
+
+```bash
+podman run -p 8081:8080 -d --name speedtest ghcr.io/librespeed/speedtest
+```