Using this script is demonstrated in our Windows 2016 Server Core installation instructional video.
You can easily edit the code below, then copy it into Notepad and save it as [CoreSQLInstall.ini]
Edit the following lines.

1. Domain name change - Lines 65, 78, 92
2. Password change - Lines 66, 79

Create the following users in your Server Domains
[Active Directory Users and Computers]
Lines

1. 65 - sqlagent
2. 78 - sqlengine
3. 92 - sqlcore01

Give the users the following permission roles.

1. Administrators
2. Domain Admins
3. Domain Computers
4. Domain Controllers
5. Domain Users
6. IIS_IUSRS

In the Properties of the user.
Choose the [Member of] tab
Then click [Add...]
(==========[Copy and paste method]==========)
Copy the following roles, and paste them into the [Enter the object names to select]
Once pasted in, click [Check Names]
Then click [OK]
You will receive a warning if any Role already exists, like [Administrators].
Administrators; Domain Admins; Domain Computers; Domain Controllers; Domain Users; IIS_IUSRS

Several places will need to be changed if you choose to change the [SQL Instance Name].
Lines 16, 144
(Line 144, only change the Instance name, do not remove any other character.)

Server Operators
;--SQL Server 2019 Configuration File [OPTIONS] ;--By specifying this parameter and accepting Microsoft R Open and Microsoft R Server terms, ;--you acknowledge that you have read and understood the terms of use. IACCEPTSQLSERVERLICENSETERMS=true ;--Specifies a Setup workflow, like INSTALL, UNINSTALL, or UPGRADE. This is a required parameter. ACTION="Install" ;--Specify a default or named instance. MSSQLSERVER is the default instance for non-Express editions and SQLExpress for Express editions. ;--This parameter is required when installing the SQL Server Database Engine (SQL), or Analysis Services (AS). INSTANCENAME="SQL2019" ;--We need to add the features we want installed FEATURES=SQLENGINE,REPLICATION,FULLTEXT,CONN ;--The default is Windows Authentication. Use "SQL" for Mixed Mode Authentication. Remove;--to switch on mixed mode SECURITYMODE="SQL" sapwd="PASSWORD" ;--Specify the root installation directory for shared components. ;--This directory remains unchanged after shared components are already installed. INSTALLSHAREDDIR="D:\SQLShared64" ;--Specify the root installation directory for the WOW64 shared components. ;--This directory remains unchanged after WOW64 shared components are already installed. INSTALLSHAREDWOWDIR="D:\SQLSharedx86" ;--Specify the Instance ID for the SQL Server features you have specified. ;--SQL Server directory structure, registry structure, ;--and service names will incorporate the instance ID of the SQL Server instance. INSTANCEID="SQL2019" ;--Specify the installation directory. INSTANCEDIR="D:\SQLInstance" ;--Specifies a cluster shared disk to associate with the SQL Server failover cluster instance. ;--FAILOVERCLUSTERDISKS="2 - Data" "3 - Logs" "4 - Temp" "5 - Backup" ;--Specifies the name of the cluster group for the SQL Server failover cluster instance. ;--FAILOVERCLUSTERGROUP="SQL Server (SQL2019)" ;--Specifies an encoded IP address. The encodings are semicolon-delimited (;), ;--and follow the format <IP Type>;<address>;<network name>;<subnet mask>. Supported IP types include DHCP, IPV4, and IPV6. ;--FAILOVERCLUSTERIPADDRESSES="IPv4;192.168.2.44;DarkSQLCluster;255.255.255.0" ;--Specifies the name of the SQL Server failover cluster instance. ;--This name is the network name that is used to connect to SQL Server services. ;--FAILOVERCLUSTERNETWORKNAME="DarkSQLCluster" ;--Agent account name AGTSVCACCOUNT="YOUR-DOMAIN-NAME-HERE\sqlagent" AGTSVCPASSWORD=PASSWORD ;--The max degree of parallelism (MAXDOP) server configuration option. SQLMAXDOP="2" ;--Specifies a Windows collation or an SQL collation to use for the Database Engine. SQLCOLLATION="SQL_Latin1_General_CP1_CI_AS" ;--Account for SQL Server service: Domain\User or system account. SQLSVCACCOUNT="YOUR-DOMAIN-NAME-HERE\sqlengine" SQLSVCPASSWORD=PASSWORD ;--Supposed to set at Developer Edition??? PID=22222-00000-00000-00000-00000 ;--Set to "True" to enable instant file initialization for SQL Server service. ;--f enabled, Setup will grant Perform Volume Maintenance Task privilege to the Database Engine Service SID. ;--This may lead to information disclosure as it could allow deleted content to be accessed by an unauthorized principal. SQLSVCINSTANTFILEINIT="False" ;--Windows account(s) to provision as SQL Server system administrators. SQLSYSADMINACCOUNTS="YOUR-DOMAIN-NAME-HERE\sqlcore01" ;--The default is Windows Authentication. Use "SQL" for Mixed Mode Authentication. SECURITYMODE="SQL" ;--The number of Database Engine TempDB files. SQLTEMPDBFILECOUNT="2" ;--Specifies the initial size of a Database Engine TempDB data file in MB. SQLTEMPDBFILESIZE="8" ;--Specifies the automatic growth increment of each Database Engine TempDB data file in MB. SQLTEMPDBFILEGROWTH="64" ;--Specifies the initial size of the Database Engine TempDB log file in MB. SQLTEMPDBLOGFILESIZE="8" ;--Specifies the automatic growth increment of the Database Engine TempDB log file in MB. SQLTEMPDBLOGFILEGROWTH="64" ;--The Database Engine root data directory. F INSTALLSQLDATADIR="F:\SQLDB" ;--Default directory for the Database Engine user databases. F SQLUSERDBDIR="F:\SQLData" ;--Default directory for the Database Engine user database logs. G SQLUSERDBLOGDIR="G:\SQLLog" ;--Directories for Database Engine TempDB files. H SQLTEMPDBDIR="H:\SQLData" ;--Directory for the Database Engine TempDB log files. H SQLTEMPDBLOGDIR="H:\SQLLog" ;--Default directory for the Database Engine backup files. I SQLBACKUPDIR="I:\SQLBackup" ;--Add description of input argument FTSVCACCOUNT FTSVCACCOUNT="NT Service\MSSQLFDLauncher$SQL2019" ;--Use SQLMAXMEMORY to minimize the risk of the OS experiencing detrimental memory pressure. SQLMAXMEMORY="2147483647" ;--Use SQLMINMEMORY to reserve a minimum amount of memory available to the SQL Server Memory Manager. SQLMINMEMORY="0" ;--Detailed help for command line argument ENU has not been defined yet. ENU="True" ;--Displays the command line parameters usage HELP="False" ;--Specifies that the detailed Setup log should be piped to the console. INDICATEPROGRESS="False" ;--Specifies that Setup should install into WOW64. ;--This command line argument is not supported on an IA64 or a 32-bit system. X86="False"
Firewall Rules for Remote access to your SQL Server.
This will need to be applied to all Server Cores with SQL Server installed.
Powershell New-NetFirewallRule -DisplayName "SQL Server" -Direction Inbound -Protocol TCP -LocalPort 1433 -Action allow New-NetFirewallRule -DisplayName "SQL Admin Connection" -Direction Inbound -Protocol TCP -LocalPort 1434 -Action allow New-NetFirewallRule -DisplayName "SQL Database Management" -Direction Inbound -Protocol UDP -LocalPort 1434 -Action allow New-NetFirewallRule -DisplayName "SQL Browser" -Direction Inbound -Protocol TCP -LocalPort 2382 -Action allow