give up expire label handling - just push additional tags on master only

Author: gionn

.github/workflows/main.yml

@@ -123,18 +123,19 @@ jobs:
           provenance: false
           target: JAVA_BASE_IMAGE
 
-      - name: Push additional image to quay.io
+      - name: Push additional anchored tag to quay.io
+        if: github.ref_name == 'master'
         env:
           SRC_IMAGE: quay.io/${{ env.IMAGE_REGISTRY_NAMESPACE }}/${{ env.IMAGE_REPOSITORY }}:${{ steps.vars.outputs.image_tag }}
           DST_IMAGE: quay.io/${{ env.IMAGE_REGISTRY_NAMESPACE }}/${{ env.IMAGE_REPOSITORY }}:${{ steps.vars.outputs.image_tag }}-${{ steps.vars.outputs.timestamp }}
         run: |
           docker buildx imagetools create ${{ env.SRC_IMAGE }} -t ${{ env.DST_IMAGE }}
 
-      - name: Push Image to docker.io
+      - name: Push images to docker.io
         if: github.ref_name == 'master'
         env:
           SRC_IMAGE: quay.io/${{ env.IMAGE_REGISTRY_NAMESPACE }}/${{ env.IMAGE_REPOSITORY }}:${{ steps.vars.outputs.image_tag }}
           DST_IMAGE: ${{ env.IMAGE_REGISTRY_NAMESPACE }}/${{ env.IMAGE_REPOSITORY }}:${{ steps.vars.outputs.image_tag }}
         run: |
           docker buildx imagetools create ${{ env.SRC_IMAGE }} -t ${{ env.DST_IMAGE }}
-          docker buildx imagetools create ${{ env.SRC_IMAGE }}-${{ steps.vars.outputs.timestamp }} -t ${{ env.DST_IMAGE }}-${{ steps.vars.outputs.timestamp }}
+          docker buildx imagetools create ${{ env.SRC_IMAGE }} -t ${{ env.DST_IMAGE }}-${{ steps.vars.outputs.timestamp }}