use official recommended github actions at https://www.scala-sbt.org/1.x/docs/GitHub-Actions-with-sbt.html

Author: bjornregnell

.github/workflows/main.yml

@@ -1,11 +1,19 @@
-name: Build
-on: [push]
+name: CI
+on:
+  pull_request:
+  push:
 jobs:
-  Test:
+  test:
     runs-on: ubuntu-latest
     steps:
-      - name: Check out repository code
-        uses: actions/checkout@v2
-      - name: SBT Build
-        run: sbt test
-        shell: bash
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 21
+      - name: Setup sbt launcher
+        uses: sbt/setup-sbt@v1
+      - name: Build and Test
+        run: sbt +test