Install Microsoft GPG apt-key

Author: JaBistDuNarrisch

.github/workflows/dotnetpull.yml

@@ -68,11 +68,16 @@ jobs:
         with:
           dotnet-version: |
             9.0.x
-      - name: Install SQLCMD tools
+      - name: Install Microsoft GPG apt-key
+        run: |
+          curl -sSL https://packages.microsoft.com/keys/microsoft.asc | gpg --dearmor > microsoft.gpg
+          sudo install -o root -g root -m 644 microsoft.gpg /etc/apt/trusted.gpg.d/
+      - name: Add Microsoft SQL Server repo
         run: |
-          curl https://packages.microsoft.com/keys/microsoft.asc | sudo apt-key add -
-          curl https://packages.microsoft.com/config/ubuntu/25.10/prod.list | sudo tee /etc/apt/sources.list.d/msprod.list
+          sudo sh -c 'echo "deb [arch=amd64] https://packages.microsoft.com/ubuntu/22.04/prod jammy main" > /etc/apt/sources.list/d/mssql-release.list'
           sudo apt-get update
+      - name: Install SQLCMD tools
+        run: |
           sudo ACCEPT_EULA=Y apt-get install -y mssql-tools unixodbc-dev
           echo 'export PATH="$PATH:/opt/mssql-tools/bin"' >> ~/.bashrc
           source ~/.bashrc