Run JUnit tests in the deploy workflow

.gitea/workflows/deploy.yml

@@ -16,11 +16,29 @@ jobs:
       matrix:
         arch: ["ubuntu-latest"]
         git-version: ["2.44.0"]
+        java-version: ["17"]
+        maven-version: ["3.8.5"]
     runs-on: ${{ matrix.arch }}
 
     # Steps to run
     steps:
       # Checkout the repo
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # Setup Java and Maven
+      - name: Set up JDK and Maven
+        uses: s4u/setup-maven-action@v1.12.0
+        with:
+          java-version: ${{ matrix.java-version }}
+          distribution: "zulu"
+          maven-version: ${{ matrix.maven-version }}
+
+      # Run JUnit Tests
+      - name: Run Tests
+        run: mvn --batch-mode test -q
+
+      # Re-checkout to reset the FS before deploying to Dokku
       - name: Checkout
         uses: actions/checkout@v4
         with: