How do I change the entry point in a package.json? - node.js

Question

everyone.
I'm new to node.js and front development and I'm working with this template:
https://github.com/coreui/coreui-free-bootstrap-admin-template
and I have a silly question that no one seems to address in the forums in a straightforward, simple way.
The template's entry point is the index.html. I tried to change it in the package.json to the login.html, because I want the app to open that page first, of course, but I cannot make it work. I know... It's so silly. I'm sure it's very easy to solve but all the examples I find explain the set up using webpack, and this template doesn't use it.
Could anyone give me a hint? I'll deeply appreciate it.
I copy the package.json for you:
{
"name": "#coreui/coreui-free-bootstrap-admin-template",
"version": "2.1.15",
"description": "Free Bootstrap Admin Template",
"keywords": [
"admin",
"admin panel",
"admin template",
"bootstrap",
"css",
"dashboard",
"framework",
"front-end",
"responsive",
"sass",
"ui kit",
"webapp"
],
"homepage": "https://coreui.io",
"bugs": {
"url": "https://github.com/coreui/coreui-free-bootstrap-admin-template/issues",
"email": "support#coreui.io"
},
"license": "MIT",
"author": {
"name": "Łukasz Holeczek",
"url": "http://holeczek.pl",
"github": "https://github.com/mrholek",
"twitter": "https://twitter.com/lukaszholeczek"
},
"contributors": [
{
"name": "Andrzej Kopański",
"url": "https://github.com/xidedix"
}
],
"main": "src/index.html",
"repository": {
"type": "git",
"url": "git+https://github.com/coreui/coreui-free-bootstrap-admin-template.git"
},
"scripts": {
"build": "npm-run-all build-clean build-copy build-vendors",
"build-clean": "rimraf dist",
"build-copy": "copyfiles -a -e \"src/scss/**/*\" -u 1 \"src/**/*\" dist/",
"build-vendors": "node build/vendors.js",
"css": "npm-run-all --parallel css-compile* --sequential css-prefix css-minify*",
"css-compile": "node-sass --output-style expanded --source-map true --source-map-contents true --precision 6 src/scss/style.scss src/css/style.css",
"css-compile-vendors": "node build/vendors-sass.js",
"css-lint": "stylelint --config build/.stylelintrc --syntax scss \"src/scss/**/*.scss\"",
"css-minify": "cleancss --level 1 --source-map --source-map-inline-sources --output src/css/style.min.css src/css/style.css",
"css-prefix": "postcss --config build/postcss.config.js --replace \"src/css/*.css\" \"!src/css/*.min.css\"",
"js": "npm-run-all --parallel js-compile* js-lint*",
"js-compile": "cross-env PLUGINS=true babel src/js/src/ --out-dir src/js/ --source-maps",
"js-lint": "eslint src/js/src",
"localhost": "browser-sync start --server \"./src\" --serveStatic \"./\" --files \"!./src/js/src/**/*, ./src/**/*, !./src/scss/**/*\"",
"localhost-dist": "browser-sync start --server \"./dist\"",
"pug": "node build/pug.js",
"release-version": "node build/change-version.js",
"serve": "npm-run-all --parallel localhost watch-css watch-js",
"watch-css": "nodemon --ignore dist/ -e scss -x \"npm run css\"",
"watch-js": "nodemon --watch src/js/src/ -x \"npm run js\"",
"watch-pug": "nodemon -e pug -x \"npm run pug\""
},
"dependencies": {
"#coreui/coreui": "^2.1.12",
"#coreui/coreui-plugin-chartjs-custom-tooltips": "^1.3.1",
"#coreui/icons": "0.3.0",
"bootstrap": "^4.3.1",
"chart.js": "^2.8.0",
"core-js": "^3.1.4",
"flag-icon-css": "^3.3.0",
"font-awesome": "~4.7.0",
"jquery": "^3.4.1",
"pace-progress": "1.0.2",
"perfect-scrollbar": "^1.4.0",
"popper.js": "^1.15.0",
"regenerator-runtime": "^0.13.2",
"simple-line-icons": "2.4.1"
},
"devDependencies": {
"#babel/cli": "^7.5.0",
"#babel/core": "^7.5.4",
"#babel/plugin-proposal-object-rest-spread": "^7.5.4",
"#babel/plugin-proposal-throw-expressions": "^7.2.0",
"#babel/preset-env": "^7.5.4",
"autoprefixer": "^9.6.1",
"babel-eslint": "^10.0.2",
"babel-plugin-transform-es2015-modules-strip": "^0.1.1",
"browser-sync": "^2.26.7",
"chalk": "^2.4.2",
"clean-css-cli": "^4.3.0",
"copyfiles": "^2.1.1",
"cross-env": "^5.2.0",
"eslint": "^5.16.0",
"eslint-plugin-compat": "^3.2.0",
"foreach-cli": "^1.8.1",
"js-beautify": "^1.10.0",
"node-sass": "^4.12.0",
"nodemon": "^1.19.1",
"npm-run-all": "^4.1.5",
"postcss-cli": "^6.1.3",
"pug": "^2.0.4",
"rimraf": "^2.6.3",
"shelljs": "^0.8.3",
"stylelint": "^10.1.0",
"stylelint-config-recommended-scss": "^3.3.0",
"stylelint-config-standard": "^18.3.0",
"stylelint-order": "^3.0.1",
"stylelint-scss": "^3.9.1"
},
"engines": {
"node": ">=8"
},
"browserslist": [
"last 1 major version",
">= 1%",
"Chrome >= 45",
"Firefox >= 38",
"Edge >= 12",
"Explorer >= 10",
"iOS >= 9",
"Safari >= 9",
"Android >= 4.4",
"Opera >= 30"
]
}