diff --git a/.github/workflows/dev_jupyter-pyspark-with-alibi-detect.yaml b/.github/workflows/dev_jupyter-pyspark-with-alibi-detect.yaml
index 1d59ba6e..e89a8bb8 100644
--- a/.github/workflows/dev_jupyter-pyspark-with-alibi-detect.yaml
+++ b/.github/workflows/dev_jupyter-pyspark-with-alibi-detect.yaml
@@ -44,16 +44,6 @@ jobs:
           image-index-manifest-tag: ${{ env.IMAGE_VERSION }}
           container-file: ${{ env.DOCKERFILE_PATH }}
 
-      - name: Publish Container Image on docker.stackable.tech
-        uses: stackabletech/actions/publish-image@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
-        with:
-          image-registry-uri: docker.stackable.tech
-          image-registry-username: github
-          image-registry-password: ${{ secrets.NEXUS_PASSWORD }}
-          image-repository: demos/${{ env.IMAGE_NAME }}
-          image-manifest-tag: ${{ steps.build.outputs.image-manifest-tag }}
-          source-image-uri: ${{ steps.build.outputs.image-manifest-uri }}
-
       - name: Publish Container Image on oci.stackable.tech
         uses: stackabletech/actions/publish-image@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
         with:
@@ -74,15 +64,6 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
-      - name: Publish and Sign Image Index Manifest to docker.stackable.tech
-        uses: stackabletech/actions/publish-index-manifest@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
-        with:
-          image-registry-uri: docker.stackable.tech
-          image-registry-username: github
-          image-registry-password: ${{ secrets.NEXUS_PASSWORD }}
-          image-repository: demos/${{ env.IMAGE_NAME }}
-          image-index-manifest-tag: ${{ env.IMAGE_VERSION }}
-
       - name: Publish and Sign Image Index Manifest to oci.stackable.tech
         uses: stackabletech/actions/publish-index-manifest@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
         with:
diff --git a/.github/workflows/dev_nifi.yaml b/.github/workflows/dev_nifi.yaml
index 017210c4..efe956a4 100644
--- a/.github/workflows/dev_nifi.yaml
+++ b/.github/workflows/dev_nifi.yaml
@@ -43,16 +43,6 @@ jobs:
           image-index-manifest-tag: ${{ env.IMAGE_VERSION }}
           container-file: ${{ env.DOCKERFILE_PATH }}
 
-      - name: Publish Container Image on docker.stackable.tech
-        uses: stackabletech/actions/publish-image@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
-        with:
-          image-registry-uri: docker.stackable.tech
-          image-registry-username: github
-          image-registry-password: ${{ secrets.NEXUS_PASSWORD }}
-          image-repository: demos/${{ env.IMAGE_NAME }}
-          image-manifest-tag: ${{ steps.build.outputs.image-manifest-tag }}
-          source-image-uri: ${{ steps.build.outputs.image-manifest-uri }}
-
       - name: Publish Container Image on oci.stackable.tech
         uses: stackabletech/actions/publish-image@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
         with:
@@ -73,15 +63,6 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
-      - name: Publish and Sign Image Index Manifest to docker.stackable.tech
-        uses: stackabletech/actions/publish-index-manifest@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
-        with:
-          image-registry-uri: docker.stackable.tech
-          image-registry-username: github
-          image-registry-password: ${{ secrets.NEXUS_PASSWORD }}
-          image-repository: demos/${{ env.IMAGE_NAME }}
-          image-index-manifest-tag: ${{ env.IMAGE_VERSION }}
-
       - name: Publish and Sign Image Index Manifest to oci.stackable.tech
         uses: stackabletech/actions/publish-index-manifest@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
         with:
diff --git a/.github/workflows/dev_spark-k8s-with-scikit-learn.yaml b/.github/workflows/dev_spark-k8s-with-scikit-learn.yaml
index 56748f57..8eb8ddaa 100644
--- a/.github/workflows/dev_spark-k8s-with-scikit-learn.yaml
+++ b/.github/workflows/dev_spark-k8s-with-scikit-learn.yaml
@@ -47,16 +47,6 @@ jobs:
           image-index-manifest-tag: ${{ env.IMAGE_VERSION }}
           container-file: ${{ env.DOCKERFILE_PATH }}
 
-      - name: Publish Container Image on docker.stackable.tech
-        uses: stackabletech/actions/publish-image@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
-        with:
-          image-registry-uri: docker.stackable.tech
-          image-registry-username: github
-          image-registry-password: ${{ secrets.NEXUS_PASSWORD }}
-          image-repository: demos/${{ env.IMAGE_NAME }}
-          image-manifest-tag: ${{ steps.build.outputs.image-manifest-tag }}
-          source-image-uri: ${{ steps.build.outputs.image-manifest-uri }}
-
       - name: Publish Container Image on oci.stackable.tech
         uses: stackabletech/actions/publish-image@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
         with:
@@ -77,17 +67,6 @@ jobs:
       - name: Checkout Repository
         uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
 
-      # TODO: remove image-architecture key once arm image is also built
-      - name: Publish and Sign Image Index Manifest to docker.stackable.tech
-        uses: stackabletech/actions/publish-index-manifest@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6
-        with:
-          image-registry-uri: docker.stackable.tech
-          image-registry-username: github
-          image-registry-password: ${{ secrets.NEXUS_PASSWORD }}
-          image-repository: demos/${{ env.IMAGE_NAME }}
-          image-index-manifest-tag: ${{ env.IMAGE_VERSION }}
-          image-architectures: '["amd64"]'
-
       # TODO: remove image-architecture key once arm image is also built
       - name: Publish and Sign Image Index Manifest to oci.stackable.tech
         uses: stackabletech/actions/publish-index-manifest@013e6482fbc0edf2d38cf9220fc931f6a81336fb # v0.0.6