@paulr282 with 2.1.0p11 we introduced a release candidate process for the 2.1.0 branch. So it simply means, this image is based on the 2.1.0p11-rc2 tag (which corresponds to the 2.1.0p11 tag).
Anyway - you received the 2.1.0p11 with that image 
Thanks for reporting, we will clean that up!
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