Set up Dev and Prod enviroments and updae docker to build prod enviroment

Frontend/patient_manager/lib/env/env.dart

@@ -0,0 +1,36 @@
+enum Enviroment { dev, prod }
+
+abstract class AppEnviroment {
+  static late String baseApiUrl;
+  static late Enviroment _enviroment;
+  static Enviroment get enviroment => _enviroment;
+  static setupEnv(Enviroment env) {
+    _enviroment = env;
+    switch (env) {
+      case Enviroment.dev:
+        {
+          baseApiUrl = "http://localhost";
+          break;
+        }
+      case Enviroment.prod:
+        {
+          baseApiUrl = "api";
+          break;
+        }
+    }
+  }
+
+  static String getEnv() {
+    //_enviroment = env;
+    switch (_enviroment) {
+      case Enviroment.dev:
+        {
+          return "Dev";
+        }
+      case Enviroment.prod:
+        {
+          return "Prod";
+        }
+    }
+  }
+}