How to install dotnet core sdk in Debian Jessie

Question

I'm having issues installing Dotnet Core SDK on my Debian Jessie Box. This is the guide i've followed https://learn.microsoft.com/en-us/dotnet/core/linux-prerequisites?tabs=netcore2x.

After Registering the Product Key and Feed all i get is Unable to locate Package when trying to do an apt-get install dotnet-sdk-2.0.0 or dotnet-sdk-2.0.2. I'm currently logged in as root as this is my local dev machine.

Steps to reproduce:

curl https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg   
mv microsoft.gpg /etc/apt/trusted.gpg.d/microsoft.gpg  
sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/repos/microsoft-debian-jessie-prod jessie main" > /etc/apt/sources.list.d/dotnetdev.list'  
apt-get update  
apt-get install dotnet-sdk-2.0.0

Reading package lists... Done   
Building dependency tree  
Reading state information... Done
E: Unable to locate package dotnet-sdk-2.0.0
E: Couldn't find any package by regex 'dotnet-sdk-2.0.0'

Where am i going wrong with this? It's like apt cannot see the microsoft repo for some reason.
I realize i could just install this from a downloaded tarball and i will do that if necessary but my preference is to use the package manager for easy maintenance.

Here is the output of apt-get update

root@myserver:/etc/apt# apt-get update
Hit https://deb.nodesource.com jessie InRelease
Hit https://deb.nodesource.com jessie/main Sources
Hit https://deb.nodesource.com jessie/main i386 Packages
Get:1 https://packages.microsoft.com jessie InRelease [2,846 B]
Get:2 https://deb.nodesource.com jessie/main Translation-en_US [162 B]
Get:3 https://deb.nodesource.com jessie/main Translation-en [162 B]
Get:4 https://packages.microsoft.com jessie/main amd64 Packages [6,069 B]
Get:5 https://deb.nodesource.com jessie/main Translation-en_US [162 B]
Get:6 https://packages.microsoft.com jessie/main Translation-en_US [178 B]
Get:7 https://deb.nodesource.com jessie/main Translation-en [162 B]
Get:8 https://deb.nodesource.com jessie/main Translation-en_US [162 B]
Get:9 https://packages.microsoft.com jessie/main Translation-en [178 B]
Get:10 https://deb.nodesource.com jessie/main Translation-en [162 B]
Get:11 https://packages.microsoft.com jessie/main Translation-en_US [178 B]
Get:12 https://deb.nodesource.com jessie/main Translation-en_US [162 B]
Get:13 https://packages.microsoft.com jessie/main Translation-en [178 B]
Get:14 https://deb.nodesource.com jessie/main Translation-en [162 B]
Get:15 https://packages.microsoft.com jessie/main Translation-en_US [178 B]
Get:16 https://deb.nodesource.com jessie/main Translation-en_US [162 B]
Ign https://deb.nodesource.com jessie/main Translation-en_US
Get:17 https://packages.microsoft.com jessie/main Translation-en [178 B]
Get:18 https://deb.nodesource.com jessie/main Translation-en [162 B]
Ign https://deb.nodesource.com jessie/main Translation-en
Get:19 https://packages.microsoft.com jessie/main Translation-en_US [178 B]
Get:20 https://packages.microsoft.com jessie/main Translation-en [178 B]
Get:21 https://packages.microsoft.com jessie/main Translation-en_US [178 B]
Ign https://packages.microsoft.com jessie/main Translation-en_US
Get:22 https://packages.microsoft.com jessie/main Translation-en [178 B]
Ign https://packages.microsoft.com jessie/main Translation-en
Fetched 8,915 B in 1s (5,969 B/s)
Reading package lists... Done

Answer 1

After fighting with this for days i decided to upgrade my box to Debian Stretch. Here is the article i followed https://linuxconfig.org/how-to-upgrade-debian-8-jessie-to-debian-9-stretch

apt-get update
apt-get upgrade
apt-get dist-upgrade

Changed my sources.list

FROM JESSIE  
deb http://httpredir.debian.org/debian jessie main  
deb http://httpredir.debian.org/debian jessie-updates main  
deb http://security.debian.org jessie/updates main  
TO STRETCH  
deb http://httpredir.debian.org/debian stretch main  
deb http://httpredir.debian.org/debian stretch-updates main  
deb http://security.debian.org stretch/updates main  

Ran this again

apt-get update
apt-get upgrade
apt-get dist-upgrade

After the upgrade completed i was able to finally see the dotnet core packages i was looking for!

Answer 2

Another reason this might not be working for you is if you are running a 32 bit version of linux. Dot Net Core Packages are only available for 64 bit. I ran into this gotcha as well when nothing was coming up when trying to install on a 32 bit version of Debian. https://learn.microsoft.com/en-us/dotnet/core/linux-prerequisites?tabs=netcore2x