Enable ssh

Author: facundominguez

.github/workflows/build.yml

@@ -124,6 +124,11 @@ jobs:
         restore-keys: |
           repo-cache-${{ runner.os }}-nixpkgs-${{ env.cache-version }}-    
 
+    - name: Setup upterm session
+      run: |
+        echo "@cert-authority uptermd.upterm.dev,[2a09:8280:1::3:4b89]:22 ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICiecex8Dq718eSe1CCLgLvDmI7AagvCtax7brPFWkh4" >> ~/.ssh/knownhosts
+        nix-shell -p upterm --run "upterm host"
+
     - name: Prefetch Stackage snapshot
       shell: bash
       run: |