rules_r: add tag manual to r_binary_image
rules_r: add tag manual to r_binary_image

Summary: It can be expensive to build docker images as part of CI, etc.

Test Plan: NA

Reviewers: bbentson

Reviewed By: bbentson

Maniphest Tasks: T12955

Differential Revision: https://phabricator.grailbio.com/D27047

fbshipit-source-id: ad3a17a

grailbio/rules_r,grailbio/rules_r,grailbio/rules_r,grailbio/rules_r,grailbio/rules_r