Added step to install SBT in ci.yml.

Author: cheeseng

.github/workflows/ci.yml

@@ -13,5 +13,15 @@ jobs:
       with:
         distribution: temurin
         java-version: 8
+    - name: Setup SBT
+      run: |
+        sudo apt update
+        sudo apt install apt-transport-https curl gnupg -yqq
+        echo "deb https://repo.scala-sbt.org/scalasbt/debian all main" | sudo tee /etc/apt/sources.list.d/sbt.list
+        echo "deb https://repo.scala-sbt.org/scalasbt/debian /" | sudo tee /etc/apt/sources.list.d/sbt_old.list
+        curl -sL "https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x2EE0EA64E40A89B84B2DF73499E82A75642AC823" | sudo -H gpg --no-default-keyring --keyring gnupg-ring:/etc/apt/trusted.gpg.d/scalasbt-release.gpg --import
+        sudo chmod 644 /etc/apt/trusted.gpg.d/scalasbt-release.gpg
+        sudo apt update
+        sudo apt install sbt    
     - name: Build and Test
       run: sbt -v +test