Problem installation on Debian strecth

Hi guys,

I’m trying to install Docker on a virtual machine based on Debian Stretch v.9: I follow the official tutorial for installation:

but without succes: when I install Docker with
sudo apt-get install docker-ce
it fails becau it can’t find any package named docker-ce.

So I try to download the deb package from
and the package downloaded is:

but when I try with the command
sudo dpkg -i /path/to/package.deb
I receive the error of incompatibility of the architecture: my architeture is based on i686.
Can someone help me?

Peppe, not sure if you’re still getting the error. But I used APT and it worked first time rather than the deb pkgs. Try that