Examine source code of Banking Container

{
  "manifest_version": 2,
  "name": "Banking Container",
  "version": "1.0.1",
  "description": "Easily isolate your banking activity for increased security.",
  "icons": {
    "128": "icon.png"
  },
  "applications": {
    "gecko": {
      "id": "@bank-container"
    }
  },
  "permissions": [
    "<all_urls>",
    "browsingData",
    "contextualIdentities",
    "cookies",
    "management",
    "storage",
    "tabs",
    "webRequestBlocking",
    "webRequest"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}