CHANGE: Code Refactoring + Docker image + small fixes

.vscode/launch.json

@@ -0,0 +1,27 @@
+{
+	// Use IntelliSense to learn about possible attributes.
+	// Hover to view descriptions of existing attributes.
+	// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+	"version": "0.2.0",
+	"configurations": [
+		{
+			"name": "Python Debugger: Flask",
+			"type": "debugpy",
+			"request": "launch",
+			"module": "flask",
+			"env": { "FLASK_APP": "app.py", "FLASK_DEBUG": "1" },
+			"args": ["run", "--no-debugger", "--no-reload"],
+			"jinja": true,
+			"autoStartBrowser": false,
+			"cwd": "${workspaceFolder}/src"
+		},
+		{
+			"name": "Python Debugger: Current File",
+			"type": "debugpy",
+			"request": "launch",
+			"program": "${file}",
+			"console": "integratedTerminal",
+			"cwd": "${workspaceFolder}/src"
+		}
+	]
+}