postgresql-10 armhf repository

Hello,

I would like to install postgresql-10 on raspberries. I followed this
instructions : https://wiki.postgresql.org/wiki/Apt

Unfortunatly after a "sudo apt-get update" I get the error :
" Skipping acquire of configured file 'main/binary-armhf/Packages' as
repository 'http://apt.postgresql.org/pub/repos/apt stretch-pgdg
InRelease' doesn't support architecture 'armhf' "

The problem is that there is no armhf directory on the official
repository https://apt.postgresql.org/pub/repos/apt/dists/stretch-pgdg/main/

So, I have two questions :

* Why postgresql.org doesn't have this package on the repository ?
* Is there any other repository with the last version of postgresql-10
armhf packages ?

Regards,
Greg