code: public DockerRuleBuilder keepContainer(boolean keepContainer) {
          if (keepContainer) {
              this.stopOptions.setOptions(StopOption.KEEP);
          } else {
              this.stopOptions.setOptions(StopOption.REMOVE);
          }
          return this;
      }
docs: Keep stopped container after test.
  @deprecated Use {@link #stopOptions(StopOption...)} instead.