webpack-dev-server --inline --progress --config build/webpack.dev.conf.js --host 0.0.0.0

https://192.168.20.45:45455/api/users/authenticate/ net::ERR_CERT_AUTHORITY_INVALID

return fetch('https://192.168.20.45:45455/api/users/authenticate/', requestOptions)
    .then(handleResponse)
    .then(user => {
        // login successful if there's a jwt token in the response
        if (user.token) {
            // store user details and jwt token in local storage to keep user logged in between page refreshes
            localStorage.setItem('user', JSON.stringify(user));
        }

        return user;
    });