content: # Copyright 2021 Google LLC
  #
  # 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
  #
  #     https://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.
  
  FROM arm64v8/ubuntu:20.04 as build_arm
  
  RUN apt-get update && apt-get install -yq --no-install-recommends build-essential
  
  RUN mkdir /build
  COPY chal.c /build/
  RUN gcc -o /build/chal-aarch64 /build/chal.c
  
  FROM ubuntu:20.04 as build
  
  RUN apt-get update && apt-get install -yq --no-install-recommends build-essential
  
  RUN mkdir /build
  COPY chal.c /build/
  RUN gcc -o /build/chal-x86-64 /build/chal.c
  COPY --from=build_arm /build/chal-aarch64 /build/
  COPY --from=build_arm /lib/aarch64-linux-gnu/libc.so.6 /build/libc-aarch64.so
  
  CMD sleep 1
  