Add devcontainer and Azure CLI script

.devcontainer/Dockerfile

@@ -0,0 +1,2 @@
+ARG IMAGE=bullseye
+FROM --platform=amd64 mcr.microsoft.com/devcontainers/${IMAGE}

.devcontainer/devcontainer.json

@@ -0,0 +1,28 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.245.0/containers/python-3
+{
+	"name": "ms-identity-python-webapp",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"args": { 
+			"IMAGE": "python:3.10"
+		}
+	},
+	"features": {
+		"ghcr.io/devcontainers/features/azure-cli:1": {}
+	},
+	// Configure tool-specific properties.
+	"customizations": {
+		// Add the IDs of extensions you want installed when the container is created.
+		"extensions": [
+			"ms-python.python",
+			"ms-python.vscode-pylance"
+		]
+	},
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	"forwardPorts": [5000, 50505],
+
+	// Comment out to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode"
+}

.gitignore

@@ -105,3 +105,5 @@ venv.bak/
 
 # flask session files
 flask_session/
+
+.azure/