firebase.json

{
  "hosting": {
    "public": "dist",
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "/boards{,/**}",
        "run": {
          "serviceId": "retrotools",
          "region": "us-east1"
        }
      },
      {
        "source": "/auth{,/**}",
        "run": {
          "serviceId": "retrotools",
          "region": "us-east1"
        }
      },
      {
        "source": "**",
        "destination": "/index.html"
      }
    ],
    "headers": [
      {
        "source": "**/*.@(js|css|png)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=25200,public"
          }
        ]
      },
      {
        "source": "**/*",
        "headers": [
          {
            "key": "Strict-Transport-Security",
            "value": "max-age=63072000; includeSubDomains"
          },
          {
            "key": "X-Content-Type-Options",
            "value": "nosniff"
          },
          {
            "key": "X-Frame-Options",
            "value": "sameorigin"
          },
          {
            "key": "X-XSS-Protection",
            "value": "1"
          },
          {
            "key": "Feature-Policy",
            "value": "fullscreen 'self'"
          },
          {
            "key": "Upgrade-Insecure-Requests",
            "value": "1"
          },
          {
            "key": "Referrer-Policy",
            "value": "strict-origin"
          }
        ]
      }
    ]
  }
}