Run init and exit commands with eval.

scripts/entrypoint.sh

@@ -2,7 +2,7 @@
 set -x
 
 term_handler() {
-  $USER_COMMAND_EXIT
+  eval $USER_COMMAND_EXIT
   exit 143; # 128 + 15 -- SIGTERM
 }
 
@@ -10,6 +10,6 @@ trap 'kill ${!}; term_handler' SIGTERM
 
 touch $LOG_FILE
 
-$USER_COMMAND_INIT &
+eval $USER_COMMAND_INIT &
 
 tail -f $LOG_FILE & wait ${!}