Added db configurations and Dockerfile

internal/api/routes.go

@@ -3,6 +3,8 @@ package api
 import "net/http"
 
 var Routes = map[string]func(w http.ResponseWriter, r *http.Request){
-	"/":     Hello,
-	"/file": LoadFile,
+	"GET /":        Hello,
+	"GET /file":    GetFile,
+	"POST /file":   LoadFile,
+	"DELETE /file": DeleteFile,
 }