Add options to overwrite GameUserSettings.ini and Game.ini

README.asciidoc

@@ -538,6 +538,21 @@ crash-restart loop if the cause of the crash is not resolved.
 `arkBackupPreUpdate`::
     Set to `true` to enable automatic backups before updating
 
+`arkPreStart`::
+    Set to the path to a script to execute on startup if it exists
++
+default: /path/to/instance/config.start
+
+`arkGameUserSettingsIniFile`::
+    Set to the path to an ini file to replace GameUserSettings.ini on startup if it exists
++
+default: /path/to/instance/config.GameUserSettings.ini
+
+`arkGameIniFile`::
+    Set to the path to an ini file to replace Game.ini on startup if it exists
++
+default: /path/to/instance/config.Game.ini
+
 `arkStagingDir`::
     Sets the staging directory in order to download updates
     before shutting down the server

tools/arkmanager

@@ -1311,12 +1311,32 @@ doStart() {
   if [ -n "$serverpid" ] && kill -0 "$serverpid"; then
     logprint "Start aborted due to server already running - pid: $serverpid"
   else
+    local saverootdir="${arkserverroot}/${arkserverdir}/Saved"
+    local savedcfgdir="${saverootdir}/Config/LinuxServer"
     local prestart="${configfile%.cfg}.start"
+    local gusini="${configfile%.cfg}.GameUserSettings.ini"
+    local gameini="${configfile%.cfg}.Game.ini"
+
+    if [ -n "${arkGameUserSettingsIniFile}" ]; then
+      gusini="${arkGameUserSettingsIniFile}"
+    fi
+
+    if [ -n "${arkGameIniFile}" ]; then
+      gameini="${arkGameIniFile}"
+    fi
 
     if [ -n "${arkPreStart}" ]; then
       prestart="${arkPreStart}"
     fi
 
+    if [[ -n "${gusini}" && -f "${gusini}" ]]; then
+      cp "${gusini}" "${savedcfgdir}/GameUserSettings.ini"
+    fi
+
+    if [[ -n "${gameini}" && -f "${gameini}" ]]; then
+      cp "${gameini}" "${savedcfgdir}/Game.ini"
+    fi
+
     if [[ -n "${prestart}" && -f "${prestart}" ]]; then
       if [ -x "${prestart}" ]; then
         "${prestart}" "$@"