adding support to s390x arch

cluster-autoscaler/Dockerfile.s390x

@@ -0,0 +1,20 @@
+# Copyright 2016 The Kubernetes Authors. All rights reserved
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+ARG BASEIMAGE=gcr.io/distroless/static:nonroot-s390x
+FROM $BASEIMAGE
+LABEL maintainer="Marcin Wielgus <[email protected]>"
+
+COPY cluster-autoscaler-s390x /cluster-autoscaler
+WORKDIR /
+CMD ["/cluster-autoscaler"]

cluster-autoscaler/Makefile

@@ -1,4 +1,4 @@
-ALL_ARCH = amd64 arm64
+ALL_ARCH = amd64 arm64 s390x
 all: $(addprefix build-arch-,$(ALL_ARCH))
 
 TAG?=dev