Add containerized staging deployment

vite.config.ts

@@ -1,11 +1,11 @@
-import adapter from '@sveltejs/adapter-auto';
+import adapter from '@sveltejs/adapter-node';
 import { sveltekit } from '@sveltejs/kit/vite';
 import { defineConfig } from 'vite';
 
 export default defineConfig({
 	server: {
 		host: '0.0.0.0',
-		allowedHosts: ['dev.shd.build', 'shd.build']
+		allowedHosts: ['dev.shd.build', 'stage.shd.build', 'shd.build']
 	},
 	plugins: [
 		sveltekit({
@@ -15,9 +15,6 @@ export default defineConfig({
 					filename.split(/[/\\]/).includes('node_modules') ? undefined : true
 			},
 
-			// adapter-auto only supports some environments, see https://svelte.dev/docs/kit/adapter-auto for a list.
-			// If your environment is not supported, or you settled on a specific environment, switch out the adapter.
-			// See https://svelte.dev/docs/kit/adapters for more information about adapters.
 			adapter: adapter()
 		})
 	]