fix(#157): review: either `--` launch or loop

docker/docker-distance-entrypoint

@@ -6,8 +6,7 @@
 if [ "$1" = -- ]; then
   shift
   distance-oracle "$@"
-fi
-
+else
   ORACLE_RESULT_DIR="${ORACLE_RESULT_DIR:-/distance}"
   ORACLE_EXECUTION_INTERVAL="${ORACLE_EXECUTION_INTERVAL:-1800}"
   ORACLE_MAX_DEPTH="${ORACLE_MAX_DEPTH:-5}"
@@ -19,3 +18,4 @@ while [ true ]; do
     echo "Waiting $ORACLE_EXECUTION_INTERVAL seconds before next execution..."
     sleep $ORACLE_EXECUTION_INTERVAL
   done
+fi