# syntax=docker/dockerfile:1


#   Copyright 2020 Docker Compose CLI authors

#   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.

FROM alpine
RUN apk add --no-cache openssh-client

WORKDIR /compose
COPY fake_rsa.pub /compose/

RUN --mount=type=ssh,id=fake-ssh,required=true diff <(ssh-add -L) <(cat /compose/fake_rsa.pub)