Update README.md

README.md

@@ -3,3 +3,43 @@
 A simple tool for debugging HTTP requests. nginx will return all request headers and body to the client.
 
 For the Docker image, see https://hub.docker.com/r/brndnmtthws/nginx-echo-headers/
+
+Try running it like so:
+
+```ShellSession
+$ docker run -p 8080:8080 brndnmtthws/nginx-echo-headers
+Unable to find image 'brndnmtthws/nginx-echo-headers:latest' locally
+latest: Pulling from brndnmtthws/nginx-echo-headers
+88286f41530e: Pull complete
+7c2e0e2a8099: Pull complete
+fe86df227e07: Pull complete
+Digest: sha256:177eccf79ee22074a9285341ea61e0a7864023a0a40b115a693256984821328f
+Status: Downloaded newer image for brndnmtthws/nginx-echo-headers:latest
+2019/01/24 13:55:52 [notice] 1#1: using the "epoll" event method
+2019/01/24 13:55:52 [notice] 1#1: openresty/1.11.2.5
+2019/01/24 13:55:52 [notice] 1#1: built by gcc 6.3.0 (Alpine 6.3.0)
+2019/01/24 13:55:52 [notice] 1#1: OS: Linux 4.9.125-linuxkit
+2019/01/24 13:55:52 [notice] 1#1: getrlimit(RLIMIT_NOFILE): 1048576:1048576
+2019/01/24 13:55:52 [notice] 1#1: start worker processes
+2019/01/24 13:55:52 [notice] 1#1: start worker process 7
+2019/01/24 13:56:02 [info] 7#7: *1 client 172.17.0.1 closed keepalive connection
+```
+
+Then test it (this example uses [httpie](https://httpie.org/)):
+
+```ShellSession
+$ http localhost:8080
+HTTP/1.1 200 OK
+Connection: keep-alive
+Content-Type: text/plain
+Date: Thu, 24 Jan 2019 13:56:02 GMT
+Server: openresty/1.11.2.5
+Transfer-Encoding: chunked
+
+GET / HTTP/1.1
+Host: localhost:8080
+User-Agent: HTTPie/1.0.2
+Accept-Encoding: gzip, deflate
+Accept: */*
+Connection: keep-alive
+```