Add signing key to build

Author: Naamloos

.github/workflows/buildandpublish.yml

@@ -22,14 +22,20 @@ jobs:
     - name: Restore dependencies
       run: dotnet restore
       working-directory: ShuffleMOTD
+      env:
+        OBSIDIAN_SIGNING_KEY: ${{ secrets.OBBY_RSA_PRIVATE }}
 
     - name: Build
       run: dotnet build --configuration Release
       working-directory: ShuffleMOTD
+      env:
+        OBSIDIAN_SIGNING_KEY: ${{ secrets.OBBY_RSA_PRIVATE }}
 
     - name: Publish
       run: dotnet publish --configuration Release
       working-directory: ShuffleMOTD
+      env:
+        OBSIDIAN_SIGNING_KEY: ${{ secrets.OBBY_RSA_PRIVATE }}
 
     - name: Get short SHA
       id: vars