Fork of external-dns but only Hetzner provider included to speed up provider development
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# Copyright 2017 The Kubernetes 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.
# builder image
FROM golang:1.15 as builder
WORKDIR /sigs.k8s.io/external-dns
COPY . .
RUN make build
# final image
FROM alpine:3.12
LABEL maintainer="Vladimir Smagin <21h@blindage.org>"
RUN apk add --update --no-cache ca-certificates && \
update-ca-certificates
COPY --from=builder /sigs.k8s.io/external-dns/build/external-dns /bin/external-dns
# Run as UID for nobody since k8s pod securityContext runAsNonRoot can't resolve the user ID:
# https://github.com/kubernetes/kubernetes/issues/40958
USER 65534
ENTRYPOINT ["/bin/external-dns"]