firebase.json

{
  "database": {
    "rules": "database.rules.json"
  },
  "firestore": {
    "rules": "firestore.rules",
    "indexes": "firestore.indexes.json"
  },
  "functions": {
    "predeploy": [
      "npm --prefix \"functions\" run lint"
    ]
  },
  "hosting": {
    "public": "dist",
    "headers": [
      {
        "source" : "**/.*.html",
        "headers" : [ {
          "key" : "Cache-Control",
          "value" : "max-age=0, no-cache"
        }]
      },
      {
        "source": "**/*.@(jpg|jpeg|gif|png|css)",
        "headers": [
          {
            "key": "Cache-Control",
            "value": "max-age=1210000"
          }
        ]
      }
    ],
    "ignore": [
      "firebase.json",
      "**/.*",
      "**/node_modules/**"
    ],
    "rewrites": [
      {
        "source": "**",
        "destination": "/index.html"
      }
    ]
  }
}