54 lines
2.6 KiB
Docker
54 lines
2.6 KiB
Docker
# syntax=docker/dockerfile:1
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# Copyright 2020-2023 the Pinniped contributors. All Rights Reserved.
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# SPDX-License-Identifier: Apache-2.0
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# Prepare to cross-compile by always running the build stage in the build platform, not the target platform.
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FROM --platform=linux/amd64 golang:1.21.3 as build-env
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WORKDIR /work
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ARG GOPROXY
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ARG KUBE_GIT_VERSION
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ENV KUBE_GIT_VERSION=$KUBE_GIT_VERSION
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# These will be set by buildkit automatically, e.g. TARGETOS set to "linux" and TARGETARCH set to "amd64" or "arm64".
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# Useful for building multi-arch container images.
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ARG TARGETOS
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ARG TARGETARCH
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# Build the statically linked (CGO_ENABLED=0) binary.
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# Mount source, build cache, and module cache for performance reasons.
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# See https://www.docker.com/blog/faster-multi-platform-builds-dockerfile-cross-compilation-guide/
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RUN \
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--mount=target=. \
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--mount=type=cache,target=/cache/gocache \
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--mount=type=cache,target=/cache/gomodcache \
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export GOCACHE=/cache/gocache GOMODCACHE=/cache/gomodcache CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH && \
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go build -v -trimpath -ldflags "$(hack/get-ldflags.sh) -w -s" -o /usr/local/bin/pinniped-concierge-kube-cert-agent ./cmd/pinniped-concierge-kube-cert-agent/... && \
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go build -v -trimpath -ldflags "$(hack/get-ldflags.sh) -w -s" -o /usr/local/bin/pinniped-server ./cmd/pinniped-server/... && \
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ln -s /usr/local/bin/pinniped-server /usr/local/bin/pinniped-concierge && \
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ln -s /usr/local/bin/pinniped-server /usr/local/bin/pinniped-supervisor && \
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ln -s /usr/local/bin/pinniped-server /usr/local/bin/local-user-authenticator
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# Use a distroless runtime image with CA certificates, timezone data, and not much else.
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# Note that we are not using --platform here, so it will choose the base image for the target platform, not the build platform.
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# By using "distroless/static" instead of "distroless/static-debianXX" we can float on the latest stable version of debian.
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# See https://github.com/GoogleContainerTools/distroless#base-operating-system
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FROM gcr.io/distroless/static:nonroot@sha256:2a9e2b4fa771d31fe3346a873be845bfc2159695b9f90ca08e950497006ccc2e
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# Copy the server binary from the build-env stage.
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COPY --from=build-env /usr/local/bin /usr/local/bin
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# Document the default server ports for the various server apps
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EXPOSE 8443 8444 10250
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# Run as non-root for security posture
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# Use the same non-root user as https://github.com/GoogleContainerTools/distroless/blob/fc3c4eaceb0518900f886aae90407c43be0a42d9/base/base.bzl#L9
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# This is a workaround for https://github.com/GoogleContainerTools/distroless/issues/718
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USER 65532:65532
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# Set the entrypoint
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ENTRYPOINT ["/usr/local/bin/pinniped-server"]
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