feat: add a name to be more human friendly. (#29)

README.md

@@ -23,6 +23,7 @@ Tiny Go webserver that prints os information and HTTP request to output
 - `cert`: give me a certificate.
 - `key`: give me a key.
 - `port`: give me a port number. (default: 80)
+- `name`: give me a name. (it can be also defined with `WHOAMI_NAME` environment variable)
 
 ## Examples
 
@@ -63,3 +64,7 @@ $ curl -v http://localhost:80/health
 < Date: Mon, 16 Sep 2019 22:52:40 GMT
 < Content-Length: 0
 ```
+
+```console
+docker run -d -P -v ./certs:/certs --name iamfoo containous/whoami --cert /certs/cert.cer --key /certs/key.key
+```

app.go

@@ -31,11 +31,13 @@ const (
 var cert string
 var key string
 var port string
+var name string
 
 func init() {
 	flag.StringVar(&cert, "cert", "", "give me a certificate")
 	flag.StringVar(&key, "key", "", "give me a key")
 	flag.StringVar(&port, "port", "80", "give me a port number")
+	flag.StringVar(&name, "name", os.Getenv("WHOAMI_NAME"), "give me a name")
 }
 
 var upgrader = websocket.Upgrader{
@@ -149,6 +151,10 @@ func whoamiHandler(w http.ResponseWriter, req *http.Request) {
 		}
 	}
 
+	if name != "" {
+		_, _ = fmt.Fprintln(w, "Name:", name)
+	}
+
 	hostname, _ := os.Hostname()
 	_, _ = fmt.Fprintln(w, "Hostname:", hostname)