firebase.json

{
  "hosting": [
    {
      "public": "target/external/doc",
      "target": "docs-external",
      "ignore": [
        "firebase.json",
        "**/.*",
        "**/node_modules/**"
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ],
      "redirects": [
        {
          "source": "/",
          "destination": "/zebrad",
          "type": 301
        }
      ]
    },
    {
      "public": "target/internal/doc",
      "target": "docs-internal",
      "ignore": [
        "firebase.json",
        "**/.*",
        "**/node_modules/**"
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ],
      "redirects": [
        {
          "source": "/",
          "destination": "/zebrad",
          "type": 301
        }
      ]
    },
    {
      "public": "target/book",
      "target": "docs-book",
      "ignore": [
        "firebase.json",
        "**/.*",
        "**/node_modules/**"
      ],
      "rewrites": [
        {
          "source": "**",
          "destination": "/index.html"
        }
      ]
    }
  ]
}