Update comments, set default terminal in container

.devcontainer/devcontainer.json

@@ -1,18 +1,28 @@
 {
 	"name": "Python Sample",
 	"dockerFile": "Dockerfile",
-	"appPort": 9000,
-	"extensions": [
-		"ms-python.python"
-	],
+
+	// Specifies a list of ports that should be published from the container.
+	"appPort": [9000],
+
+	// Comment out the next line to run as root instead. Linux users, 
+	// update Dockerfile with your user's UID/GID if not 1000.
+	"runArgs": ["-u", "vscode"],
+
+	// Use 'settings' to set *default* container specific settings.json values on container create. 
+	// You can edit these settings after create using File > Preferences > Settings > Remote.
 	"settings": { 
+		"terminal.integrated.shell.linux": "/bin/bash",
 		"python.pythonPath": "/usr/local/bin/python",
 		"python.linting.pylintEnabled": true,
 		"python.linting.pylintPath": "/usr/local/bin/pylint",
 		"python.linting.enabled": true
 	},
+
+	// Specifies a command to run after the container is created
 	"postCreateCommand": "sudo pip install -r requirements.txt",
-	// Comment out the next line to run as root instead. Linux users, 
-	// update Dockerfile with your user's UID/GID if not 1000.
-	"runArgs": [ "-u", "vscode" ]
+
+	"extensions": [
+		"ms-python.python"
+	]
 }