update docker image(#48)

* update workflow

* create temporary workflow

* remove dependency

* hardcode version

* update Dockerfile

* remove temporary workflow

.github/workflows/eumserver_release.yml

@@ -67,16 +67,17 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+      - name: Setup
+        uses: actions/setup-java@v3
+        with:
+          java-version: 17  # Spring 3 needs at least java 17
+          distribution: temurin
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
-      - name: Install Java 17 # We cannot use the openjdk:17-jdk container, since we also need Docker inside the container
-        run: sudo apt update && sudo apt install openjdk-17-jdk
       - name: Build Docker Images
-        run: |
-          export JAVA_HOME=/usr/lib/jvm/java-17-openjdk-amd64
-          ./gradlew dockerTag -PbuildVersion=${{ github.ref_name }}
+        run: ./gradlew dockerTag -PbuildVersion=2.5.6
       - name: Push Docker Images
         run: |
           docker login -u ${{ secrets.DOCKER_HUB_USER }} -p  ${{ secrets.DOCKER_HUB_PASSWORD }}
-          docker push inspectit/inspectit-ocelot-eum-server:${{ github.ref_name }}
+          docker push inspectit/inspectit-ocelot-eum-server:2.5.6
           docker push inspectit/inspectit-ocelot-eum-server:latest

docker/Dockerfile

@@ -1,11 +1,11 @@
-FROM openjdk:11-jre-slim
+FROM openjdk:17-jdk-slim
 
 # The docker directory contains the Dockerfile, entrypoint.sh and the eum-server jar to build the docker image.
 # So the docker directory gets added to the container to successfully build the docker image.
 # The dockerfile gets build in the docker directory where it is in and no new directories are being created.
 # =====
 # In order to build a docker image locally, the eum-server should be build locally and the resulting jar should be renamed
 # to 'inspectit-ocelot-eum-server.jar' and copied to the ./docker directory
-ADD ./ / 
+ADD ./ /
 ENTRYPOINT ["sh", "/entrypoint.sh"]