diff --git a/app.py b/app.py
index b8e340c..8ad838a 100644
--- a/app.py
+++ b/app.py
@@ -207,6 +207,9 @@ def emojify(message):
 app = Flask(__name__)
 CORS(app) 
 
+if __name__ == "__main__":
+    app.run(port=5500)  
+
 @app.route('/getemoji', methods=['GET'])
 # @cross_origin()
 def get_random_emoji():
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..56d6f2f
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,15 @@
+with import <nixpkgs> {};
+
+mkShell {
+  buildInputs = [
+    python3
+    python3Packages.flask
+    python3Packages.flask-cors
+    python3Packages.gunicorn
+  ];
+
+  shellHook = ''
+    export LANG=C.UTF-8
+    export LC_ALL=C.UTF-8
+  '';
+}
\ No newline at end of file