HTTPS and File Uploads (#139)

* Add a few fixes

* Use CopyToContainer instead of bind mounts

* Remove a local compose file

* Changes according to the comments

* Rebase with master

handlers/file_upload.go

@@ -0,0 +1,47 @@
+package handlers
+
+import (
+	"log"
+	"net/http"
+
+	"github.com/gorilla/mux"
+	"github.com/play-with-docker/play-with-docker/services"
+)
+
+func FileUpload(rw http.ResponseWriter, req *http.Request) {
+	vars := mux.Vars(req)
+	sessionId := vars["sessionId"]
+	instanceName := vars["instanceName"]
+
+	s := services.GetSession(sessionId)
+	i := services.GetInstance(s, instanceName)
+
+	// allow up to 32 MB which is the default
+
+	// has a url query parameter, ignore body
+	if url := req.URL.Query().Get("url"); url != "" {
+		err := i.UploadFromURL(req.URL.Query().Get("url"))
+		if err != nil {
+			log.Println(err)
+			rw.WriteHeader(http.StatusInternalServerError)
+			return
+		}
+		rw.WriteHeader(http.StatusOK)
+		return
+	} else {
+		// This is for multipart upload
+		log.Println("Not implemented yet")
+
+		/*
+			err := req.ParseMultipartForm(32 << 20)
+			if err != nil {
+				log.Println(err)
+				rw.WriteHeader(http.StatusBadRequest)
+				return
+			}
+		*/
+		rw.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+}