CSPL-4125: Promote multi-platform images in release (#1617)

* copy multi-platform images on release

* test copy images in workflow

* test copy images in workflow

* test copy images in workflow

* use personal dockerhub creds

* cleanup

Author: rlieberman-splunk

.github/workflows/automated-release-workflow.yml

@@ -62,6 +62,9 @@ jobs:
         username: ${{ secrets.DOCKERHUB_USERNAME }}
         password: ${{ secrets.DOCKERHUB_PUSH_TOKEN}}
 
+    - name: Install regctl
+      uses: regclient/actions/regctl-installer@main
+
     - name: Install Operator SDK
       run: |
         export ARCH=$(case $(uname -m) in x86_64) echo -n amd64 ;; aarch64) echo -n arm64 ;; *) echo -n $(uname -m) ;; esac)
@@ -95,19 +98,10 @@ jobs:
         tag: "${{ github.event.inputs.release_version }}"
         draft: true
 
-    - name: Pull RC Splunk Operator Image
-      run: |
-        docker pull ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC
-
     - name: Promote RC Image to Release
       run: |
-        docker tag ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }}
-        docker tag splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }} splunk/splunk-operator:latest
-
-    - name: Push Release Image
-      run: |
-        docker push splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }}
-        docker push splunk/splunk-operator:latest
+        regctl image copy ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }}
+        regctl image copy ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC splunk/splunk-operator:latest
     
     - name: Sign Splunk Operator image with a key
       run: |
@@ -122,17 +116,9 @@ jobs:
       env:
         COSIGN_PUBLIC_KEY: ${{ secrets.COSIGN_PUBLIC_KEY }}
 
-    - name: Pull Distroless RC Splunk Operator Image
-      run: |
-        docker pull ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC-distroless
-
     - name: Promote Distroless RC Image to Release
       run: |
-        docker tag ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC-distroless splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }}-distroless
-
-    - name: Push Distroless Release Image
-      run: |
-        docker push splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }}-distroless
+        regctl image copy ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC-distroless splunk/splunk-operator:${{ github.event.inputs.operator_image_tag }}-distroless
     
     - name: Sign Distroless Splunk Operator image with a key
       run: |

.github/workflows/merge-develop-to-main-workflow.yml

@@ -104,15 +104,11 @@ jobs:
 
       - name: Tag and Push Default UBI RC Image
         run: |
-          docker pull ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC${{ github.event.inputs.release_candiate_version }}
-          docker tag ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC${{ github.event.inputs.release_candiate_version }} ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC
-          docker push ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC
+          docker buildx imagetools create -t ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC${{ github.event.inputs.release_candiate_version }}
 
       - name: Tag and Push Default Distroless RC Image
         run: |
-          docker pull ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC${{ github.event.inputs.release_candiate_version }}-distroless
-          docker tag ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC${{ github.event.inputs.release_candiate_version }}-distroless ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC-distroless
-          docker push ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC-distroless
+          docker buildx imagetools create -t ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC-distroless ${{ secrets.PUBLIC_ECR_REPOSITORY }}/${{ env.SPLUNK_OPERATOR_RC_IMAGE_NAME }}:${{ github.event.inputs.release_version }}-RC${{ github.event.inputs.release_candiate_version }}-distroless
 
       - name: Generate Release Artifacts
         run: |