Fix undefined used var

.github/workflows/deploy.yml

@@ -5,7 +5,7 @@ on:
      tags: [ '*.*' ]
 
 env:
-    DOCKER_IMAGE_NAME: "galera-healthcheck"
+    DOCKER_IMAGE_NAME: "galera_cluster_healthcheck"
 jobs:
   build-and-publish-image:
     name: Build and Publish Docker image
@@ -14,7 +14,9 @@ jobs:
     - uses: actions/checkout@v3
     - name: Build
       working-directory: ./app
-      run: docker build -t $DOCKER_IMAGE_NAME:latest -t $DOCKER_IMAGE_NAME:$current_version .
+      run: |
+            current_version=$(echo ${{ github.ref_name }} | sed 's/\([0-9]*\.[0-9]*\).*$/\1/')
+            docker build -t $DOCKER_IMAGE_NAME:latest -t $DOCKER_IMAGE_NAME:$current_version .
     - name: Login to GitHub Container Registry
       run: echo ${{ secrets.TOKEN }} | docker login ghcr.io -u ${{ secrets.USERNAME }} --password-stdin
     - name: Push Docker image to GitHub Container Registry