add simple http server, a Makefile and update the README.md file

Signed-off-by: Guillaume Lours <[email protected]>

Makefile

@@ -0,0 +1,8 @@
+.PHONY: build
+build:
+	mkdir -p bin
+	go build -trimpath -o bin/single-dev-env
+
+.PHONY: run
+run:
+	go run main.go

README.md

@@ -1,2 +1,25 @@
 # single-dev-env
 Example used to try a single container sample of Docker Dev Environments
+
+## Run the application
+You can simply use `make run` command or do it yourself with `go run main.go`
+
+Those commands will start a http server listening on port `8080` 
+and if your request `http://localhost:8080` you'll see the following output: 
+```shell
+❯ curl http://localhost:8080
+
+          ##         .
+    ## ## ##        ==
+ ## ## ## ## ##    ===
+/"""""""""""""""""\___/ ===
+{                       /  ===-
+\______ O           __/
+ \    \         __/
+  \____\_______/
+
+
+Hello from Docker!
+
+```
+

main.go

@@ -0,0 +1,31 @@
+package main
+
+import (
+"fmt"
+"log"
+"net/http"
+)
+
+func handler(w http.ResponseWriter, r *http.Request) {
+	fmt.Println(r.URL.RawQuery)
+	fmt.Fprintf(w, `
+          ##         .
+    ## ## ##        ==
+ ## ## ## ## ##    ===
+/"""""""""""""""""\___/ ===
+{                       /  ===-
+\______ O           __/
+ \    \         __/
+  \____\_______/
+
+	
+Hello from Docker!
+
+`)
+}
+
+func main() {
+	http.HandleFunc("/", handler)
+	log.Fatal(http.ListenAndServe(":8080", nil))
+}
+