docs: add docker commands to readme

README

@@ -1,4 +1,23 @@
-nostr-relay-registry
---------------------
+# nostr-relay-registry
 
-a dynamic registry of nostr relays that tests for very basic tasks in real-time.
+A dynamic registry of nostr relays that tests for very basic tasks in real-time.
+
+## Docker
+
+Build the docker image:
+
+```bash
+docker build -t nostr-relay-registry .
+```
+
+Run the container interactively:
+
+```bash
+docker run --rm -it --name=nostr-relay-registry -p 8080:80 nostr-relay-registry
+```
+
+Run container in the background:
+
+```bash
+docker run -d --restart unless-stopped --name nostr-relay-registry -p 8080:80 nostr-relay-registry
+```