[Significant Changes] Added build_command.sh to simplify the .gitlab-ci.yml. Added LOG_FILE variable to make the enrypoing 'tail -f' command more useful.

scripts/entrypoint.sh

@@ -8,6 +8,8 @@ term_handler() {
 
 trap 'kill ${!}; term_handler' SIGTERM
 
+touch $LOG_FILE
+
 $USER_COMMAND_INIT &
 
-tail -f /dev/null & wait ${!}
+tail -f $LOG_FILE & wait ${!}