Add repository to image name for latest tag

.github/workflows/joystream-node-docker.yml

@@ -178,8 +178,9 @@ jobs:
         if: github.ref == 'refs/heads/master'
         run: |
           IMAGE=${{ env.REPOSITORY }}:${{ env.TAG_SHASUM }}
-          docker manifest create latest $IMAGE-amd64 $IMAGE-arm64 $IMAGE-arm
-          docker manifest annotate latest $IMAGE-amd64 --arch amd64
-          docker manifest annotate latest $IMAGE-arm64 --arch arm64
-          docker manifest annotate latest $IMAGE-arm --arch arm
-          docker manifest push latest
+          LATEST_TAG=${{ env.REPOSITORY }}:latest
+          docker manifest create $LATEST_TAG $IMAGE-amd64 $IMAGE-arm64 $IMAGE-arm
+          docker manifest annotate $LATEST_TAG $IMAGE-amd64 --arch amd64
+          docker manifest annotate $LATEST_TAG $IMAGE-arm64 --arch arm64
+          docker manifest annotate $LATEST_TAG $IMAGE-arm --arch arm
+          docker manifest push $LATEST_TAG