Update maven.yml (#25)

* Update and rename maven.yml to buildAndTest.yml

.github/workflows/buildAndTest.yml

@@ -1,21 +1,24 @@
-name: Java CI with Maven
+name: Build and test Backend
 
 on:
   pull_request:
     branches: [ "master" ]
+  workflow_dispatch:
 
 jobs:
   build:
-
-    runs-on: ubuntu-latest
+    name: Build Backend
+    runs-on: self-hosted
 
     steps:
     - uses: actions/checkout@v3
+    
     - name: Set up JDK 21
       uses: actions/setup-java@v3
       with:
         java-version: '21'
         distribution: 'temurin'
-        cache: maven
+        
     - name: Build with Maven
       run: mvn -B package --file pom.xml
+      working-directory: Backend