Update comments, default terminal to bash

Author: Chuxel

containers/dotnetcore-2.2/.devcontainer/devcontainer.json

@@ -2,12 +2,15 @@
 	"name": "C# (.NET Core 2.2)",
 	"dockerFile": "Dockerfile",
 
+	// 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"
+	},
+
 	// Uncomment the next line if you want to publish any ports.
 	// "appPort": [],
 
-	// Uncomment the next line if you want to add in default container specific settings.json values
-	// "settings":  { "workbench.colorTheme": "Quiet Light" },
-
 	// Uncomment the next line to run commands after the container is created.
 	// "postCreateCommand": "dotnet restore"
 
@@ -16,6 +19,7 @@
 	// and USER_GID in .devcontainer/Dockerfile to match your user if not 1000.
 	// "runArgs": [ "-u", "vscode" ],
 
+	// Add the IDs of extensions you want installed when the container is created in the array below.
 	"extensions": [
 		"ms-vscode.csharp"
 	]