fix: skip leading 'v' in docker tag

.github/workflows/artifact.yml

@@ -37,7 +37,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: "Docker auth"
-        run: |-
+        run: |
           gcloud auth configure-docker ${{ env.REGION }}-docker.pkg.dev --quiet
 
       - name: Quick Docker build (gentropy only, AMD64 only, with layer cache)
@@ -50,22 +50,31 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
 
-      - name: Build and push gentropy image
+      # skip the `v` at the beginning of the tag for docker image tags
+      - name: Create a docker version tag
+        id: docker-tag
         if: github.ref == 'refs/heads/dev' || startsWith(github.ref, 'refs/tags/v')
+        uses: actions/github-script@v7
+        with:
+          script: |
+            return github.ref_name.replace('v', '');
+
+      - name: Build and push gentropy image
+        if: steps.docker-tag.outcome == 'success'
         uses: docker/build-push-action@v6
         with:
           platforms: linux/amd64,linux/arm64
           push: true
-          tags: "${{ env.GAR_LOCATION }}/${{ env.REPOSITORY }}/gentropy:${{ github.ref_name }}"
+          tags: "${{ env.GAR_LOCATION }}/${{ env.REPOSITORY }}/gentropy:${{ steps.docker-tag.outputs.result }}"
           context: .
 
       - name: Build and push VEP image
-        if: github.ref == 'refs/heads/dev' || startsWith(github.ref, 'refs/tags/v')
+        if: steps.docker-tag.outcome == 'success'
         uses: docker/build-push-action@v6
         with:
           platforms: linux/amd64
           push: true
-          tags: "${{ env.GAR_LOCATION }}/${{ env.REPOSITORY }}/custom_ensembl_vep:${{ github.ref_name }}"
+          tags: "${{ env.GAR_LOCATION }}/${{ env.REPOSITORY }}/custom_ensembl_vep:${{ steps.docker-tag.outputs.result }}"
           context: .
           file: "src/vep/Dockerfile"