Add route to display version information. (#195)

* Add version information route.

* Use build action for tests.

* Add version test to script.

* Add testing directory to dockerignore.

* Don't unnecessarily set permission for gradle wrapper script.

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [11, 17]
+        java: [ 11, 17 ]
     steps:
       - uses: actions/checkout@v2.4.0
 
@@ -22,6 +22,5 @@ jobs:
           distribution: temurin
           check-latest: true
           cache: "gradle"
-
       - name: Run Build
-        run: chmod +x ./gradlew && ./gradlew build
+        run: ./gradlew build