Added oracle service

Author: simasch

.github/workflows/build.yml

@@ -16,8 +16,23 @@ jobs:
 
     runs-on: ubuntu-latest
 
+    services:
+
+      oracle:
+        image: gvenzl/oracle-xe:18.4.0-slim
+        env:
+          ORACLE_PASSWORD: oracle
+        ports:
+          - 1521:1521
+        options: >-
+          --health-cmd healthcheck.sh
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 10
+
     steps:
       - uses: actions/checkout@v2
+
       - name: Set up JDK 8
         uses: actions/setup-java@v2
         with: