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buildkit
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buildkit/Dockerfile

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Docker
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# syntax = docker/dockerfile:1.3
ARG RUNC_VERSION=v1.0.2
ARG CONTAINERD_VERSION=v1.6.0
# containerd v1.5 for integration tests
ARG CONTAINERD_ALT_VERSION_15=v1.5.9
# containerd v1.4 for integration tests
ARG CONTAINERD_ALT_VERSION_14=v1.4.12
# available targets: buildkitd, buildkitd.oci_only, buildkitd.containerd_only
ARG BUILDKIT_TARGET=buildkitd
ARG REGISTRY_VERSION=2.7.1
ARG ROOTLESSKIT_VERSION=v0.14.2
ARG CNI_VERSION=v1.0.1
ARG STARGZ_SNAPSHOTTER_VERSION=v0.11.1
ARG ALPINE_VERSION=3.15
# git stage is used for checking out remote repository sources
FROM --platform=$BUILDPLATFORM alpine:${ALPINE_VERSION} AS git
RUN apk add --no-cache git
# xx is a helper for cross-compilation
FROM --platform=$BUILDPLATFORM tonistiigi/xx@sha256:1e96844fadaa2f9aea021b2b05299bc02fe4c39a92d8e735b93e8e2b15610128 AS xx
FROM --platform=$BUILDPLATFORM golang:1.17-alpine AS golatest
# gobuild is base stage for compiling go/cgo
FROM golatest AS gobuild-base
RUN apk add --no-cache file bash clang lld pkgconfig git make
COPY --from=xx / /
# runc source
FROM git AS runc-src
ARG RUNC_VERSION
WORKDIR /usr/src
RUN git clone https://github.com/opencontainers/runc.git runc \
&& cd runc && git checkout -q "$RUNC_VERSION"
# build runc binary
FROM gobuild-base AS runc
WORKDIR $GOPATH/src/github.com/opencontainers/runc
ARG TARGETPLATFORM
# gcc is only installed for libgcc
# lld has issues building static binaries for ppc so prefer ld for it
RUN set -e; xx-apk add musl-dev gcc libseccomp-dev libseccomp-static; \
[ "$(xx-info arch)" != "ppc64le" ] || XX_CC_PREFER_LINKER=ld xx-clang --setup-target-triple
RUN --mount=from=runc-src,src=/usr/src/runc,target=. --mount=target=/root/.cache,type=cache \
CGO_ENABLED=1 xx-go build -mod=vendor -ldflags '-extldflags -static' -tags 'apparmor seccomp netgo cgo static_build osusergo' -o /usr/bin/runc ./ && \
xx-verify --static /usr/bin/runc
FROM gobuild-base AS buildkit-base
WORKDIR /src
ENV GOFLAGS=-mod=vendor
# scan the version/revision info
FROM buildkit-base AS buildkit-version
# TODO: PKG should be inferred from go modules
RUN --mount=target=. \
PKG=github.com/moby/buildkit VERSION=$(git describe --match 'v[0-9]*' --dirty='.m' --always --tags) REVISION=$(git rev-parse HEAD)$(if ! git diff --no-ext-diff --quiet --exit-code; then echo .m; fi); \
echo "-X ${PKG}/version.Version=${VERSION} -X ${PKG}/version.Revision=${REVISION} -X ${PKG}/version.Package=${PKG}" | tee /tmp/.ldflags; \
echo -n "${VERSION}" | tee /tmp/.version;
# build buildctl binary
FROM buildkit-base AS buildctl
ENV CGO_ENABLED=0
ARG TARGETPLATFORM
RUN --mount=target=. --mount=target=/root/.cache,type=cache \
--mount=target=/go/pkg/mod,type=cache \
--mount=source=/tmp/.ldflags,target=/tmp/.ldflags,from=buildkit-version \
xx-go build -ldflags "$(cat /tmp/.ldflags)" -o /usr/bin/buildctl ./cmd/buildctl && \
xx-verify --static /usr/bin/buildctl
# build buildkitd binary
FROM buildkit-base AS buildkitd
ARG BUILDKITD_TAGS
ARG TARGETPLATFORM
RUN --mount=target=. --mount=target=/root/.cache,type=cache \
--mount=target=/go/pkg/mod,type=cache \
--mount=source=/tmp/.ldflags,target=/tmp/.ldflags,from=buildkit-version \
CGO_ENABLED=0 xx-go build -ldflags "$(cat /tmp/.ldflags) -extldflags '-static'" -tags "osusergo netgo static_build seccomp ${BUILDKITD_TAGS}" -o /usr/bin/buildkitd ./cmd/buildkitd && \
xx-verify --static /usr/bin/buildkitd
FROM scratch AS binaries-linux-helper
COPY --from=runc /usr/bin/runc /buildkit-runc
# built from https://github.com/tonistiigi/binfmt/releases/tag/buildkit%2Fv6.2.0-24
COPY --from=tonistiigi/binfmt:buildkit@sha256:ea7632b4e0b2406db438730c604339b38c23ac51a2f73c89ba50abe5e2146b4b / /
FROM binaries-linux-helper AS binaries-linux
COPY --from=buildctl /usr/bin/buildctl /
COPY --from=buildkitd /usr/bin/buildkitd /
FROM scratch AS binaries-darwin
COPY --from=buildctl /usr/bin/buildctl /
FROM scratch AS binaries-windows
COPY --from=buildctl /usr/bin/buildctl /buildctl.exe
FROM binaries-$TARGETOS AS binaries
FROM --platform=$BUILDPLATFORM alpine:${ALPINE_VERSION} AS releaser
RUN apk add --no-cache tar gzip
WORKDIR /work
ARG TARGETPLATFORM
RUN --mount=from=binaries \
--mount=source=/tmp/.version,target=/tmp/.version,from=buildkit-version \
mkdir -p /out && tar czvf "/out/buildkit-$(cat /tmp/.version).$(echo $TARGETPLATFORM | sed 's/\//-/g').tar.gz" --mtime='2015-10-21 00:00Z' --sort=name --transform 's/^./bin/' .
FROM scratch AS release
COPY --from=releaser /out/ /
# tonistiigi/alpine supports riscv64
FROM tonistiigi/alpine:${ALPINE_VERSION} AS buildkit-export
RUN apk add --no-cache fuse3 git openssh pigz xz \
&& ln -s fusermount3 /usr/bin/fusermount
COPY examples/buildctl-daemonless/buildctl-daemonless.sh /usr/bin/
VOLUME /var/lib/buildkit
FROM git AS containerd-src
ARG CONTAINERD_VERSION
ARG CONTAINERD_ALT_VERSION
WORKDIR /usr/src
RUN git clone https://github.com/containerd/containerd.git containerd
FROM gobuild-base AS containerd-base
WORKDIR /go/src/github.com/containerd/containerd
ARG TARGETPLATFORM
ENV CGO_ENABLED=1 BUILDTAGS=no_btrfs
RUN xx-apk add musl-dev gcc && xx-go --wrap
FROM containerd-base AS containerd
ARG CONTAINERD_VERSION
RUN --mount=from=containerd-src,src=/usr/src/containerd,readwrite --mount=target=/root/.cache,type=cache \
git fetch origin \
&& git checkout -q "$CONTAINERD_VERSION" \
&& make bin/containerd \
&& make bin/containerd-shim-runc-v2 \
&& make bin/ctr \
&& mv bin /out
# containerd v1.5 for integration tests
FROM containerd-base as containerd-alt-15
ARG CONTAINERD_ALT_VERSION_15
ARG GO111MODULE=off
RUN --mount=from=containerd-src,src=/usr/src/containerd,readwrite --mount=target=/root/.cache,type=cache \
git fetch origin \
&& git checkout -q "$CONTAINERD_ALT_VERSION_15" \
&& make bin/containerd \
&& make bin/containerd-shim-runc-v2 \
&& mv bin /out
# containerd v1.4 for integration tests
FROM containerd-base as containerd-alt-14
ARG CONTAINERD_ALT_VERSION_14
ARG GO111MODULE=off
RUN --mount=from=containerd-src,src=/usr/src/containerd,readwrite --mount=target=/root/.cache,type=cache \
git fetch origin \
&& git checkout -q "$CONTAINERD_ALT_VERSION_14" \
&& make bin/containerd \
&& make bin/containerd-shim-runc-v2 \
&& mv bin /out
ARG REGISTRY_VERSION
FROM registry:$REGISTRY_VERSION AS registry
FROM gobuild-base AS rootlesskit
ARG ROOTLESSKIT_VERSION
RUN git clone https://github.com/rootless-containers/rootlesskit.git /go/src/github.com/rootless-containers/rootlesskit
WORKDIR /go/src/github.com/rootless-containers/rootlesskit
ARG TARGETPLATFORM
RUN --mount=target=/root/.cache,type=cache \
git checkout -q "$ROOTLESSKIT_VERSION" && \
CGO_ENABLED=0 xx-go build -o /rootlesskit ./cmd/rootlesskit && \
xx-verify --static /rootlesskit
FROM gobuild-base AS stargz-snapshotter
ARG STARGZ_SNAPSHOTTER_VERSION
RUN git clone https://github.com/containerd/stargz-snapshotter.git /go/src/github.com/containerd/stargz-snapshotter
WORKDIR /go/src/github.com/containerd/stargz-snapshotter
ARG TARGETPLATFORM
RUN --mount=target=/root/.cache,type=cache \
git checkout -q "$STARGZ_SNAPSHOTTER_VERSION" && \
xx-go --wrap && \
mkdir /out && CGO_ENABLED=0 PREFIX=/out/ make && \
xx-verify --static /out/containerd-stargz-grpc && \
xx-verify --static /out/ctr-remote
# Copy together all binaries needed for oci worker mode
FROM buildkit-export AS buildkit-buildkitd.oci_only
COPY --from=buildkitd.oci_only /usr/bin/buildkitd.oci_only /usr/bin/
COPY --from=buildctl /usr/bin/buildctl /usr/bin/
ENTRYPOINT ["buildkitd.oci_only"]
# Copy together all binaries for containerd worker mode
FROM buildkit-export AS buildkit-buildkitd.containerd_only
COPY --from=buildkitd.containerd_only /usr/bin/buildkitd.containerd_only /usr/bin/
COPY --from=buildctl /usr/bin/buildctl /usr/bin/
ENTRYPOINT ["buildkitd.containerd_only"]
# Copy together all binaries for oci+containerd mode
FROM buildkit-export AS buildkit-buildkitd-linux
COPY --from=binaries / /usr/bin/
ENTRYPOINT ["buildkitd"]
FROM binaries AS buildkit-buildkitd-darwin
FROM binaries AS buildkit-buildkitd-windows
# this is not in binaries-windows because it is not intended for release yet, just CI
COPY --from=buildkitd /usr/bin/buildkitd /buildkitd.exe
FROM buildkit-buildkitd-$TARGETOS AS buildkit-buildkitd
FROM alpine:${ALPINE_VERSION} AS containerd-runtime
COPY --from=runc /usr/bin/runc /usr/bin/
COPY --from=containerd /out/containerd* /usr/bin/
COPY --from=containerd /out/ctr /usr/bin/
VOLUME /var/lib/containerd
VOLUME /run/containerd
ENTRYPOINT ["containerd"]
FROM --platform=$BUILDPLATFORM alpine:${ALPINE_VERSION} AS cni-plugins
RUN apk add --no-cache curl
ARG CNI_VERSION
ARG TARGETOS
ARG TARGETARCH
WORKDIR /opt/cni/bin
RUN curl -Ls https://github.com/containernetworking/plugins/releases/download/$CNI_VERSION/cni-plugins-$TARGETOS-$TARGETARCH-$CNI_VERSION.tgz | tar xzv
FROM buildkit-base AS integration-tests-base
ENV BUILDKIT_INTEGRATION_ROOTLESS_IDPAIR="1000:1000"
RUN apk add --no-cache shadow shadow-uidmap sudo vim iptables fuse \
&& useradd --create-home --home-dir /home/user --uid 1000 -s /bin/sh user \
&& echo "XDG_RUNTIME_DIR=/run/user/1000; export XDG_RUNTIME_DIR" >> /home/user/.profile \
&& mkdir -m 0700 -p /run/user/1000 \
&& chown -R user /run/user/1000 /home/user \
&& ln -s /sbin/iptables-legacy /usr/bin/iptables \
&& xx-go --wrap
# musl is needed to directly use the registry binary that is built on alpine
ENV BUILDKIT_INTEGRATION_CONTAINERD_EXTRA="containerd-1.4=/opt/containerd-alt-14/bin,containerd-1.5=/opt/containerd-alt-15/bin"
ENV BUILDKIT_INTEGRATION_SNAPSHOTTER=stargz
ENV CGO_ENABLED=0
COPY --from=stargz-snapshotter /out/* /usr/bin/
COPY --from=rootlesskit /rootlesskit /usr/bin/
COPY --from=containerd-alt-14 /out/containerd* /opt/containerd-alt-14/bin/
COPY --from=containerd-alt-15 /out/containerd* /opt/containerd-alt-15/bin/
COPY --from=registry /bin/registry /usr/bin
COPY --from=runc /usr/bin/runc /usr/bin
COPY --from=containerd /out/containerd* /usr/bin/
COPY --from=cni-plugins /opt/cni/bin/bridge /opt/cni/bin/host-local /opt/cni/bin/loopback /opt/cni/bin/
COPY hack/fixtures/cni.json /etc/buildkit/cni.json
COPY --from=binaries / /usr/bin/
FROM integration-tests-base AS integration-tests
COPY . .
ENV BUILDKIT_RUN_NETWORK_INTEGRATION_TESTS=1 BUILDKIT_CNI_INIT_LOCK_PATH=/run/buildkit_cni_bridge.lock
FROM integration-tests AS dev-env
VOLUME /var/lib/buildkit
# Rootless mode.
FROM tonistiigi/alpine:${ALPINE_VERSION} AS rootless
RUN apk add --no-cache fuse3 fuse-overlayfs git openssh pigz shadow-uidmap xz
RUN adduser -D -u 1000 user \
&& mkdir -p /run/user/1000 /home/user/.local/tmp /home/user/.local/share/buildkit \
&& chown -R user /run/user/1000 /home/user \
&& echo user:100000:65536 | tee /etc/subuid | tee /etc/subgid
COPY --from=rootlesskit /rootlesskit /usr/bin/
COPY --from=binaries / /usr/bin/
COPY examples/buildctl-daemonless/buildctl-daemonless.sh /usr/bin/
# Kubernetes runAsNonRoot requires USER to be numeric
USER 1000:1000
ENV HOME /home/user
ENV USER user
ENV XDG_RUNTIME_DIR=/run/user/1000
ENV TMPDIR=/home/user/.local/tmp
ENV BUILDKIT_HOST=unix:///run/user/1000/buildkit/buildkitd.sock
VOLUME /home/user/.local/share/buildkit
ENTRYPOINT ["rootlesskit", "buildkitd"]
FROM buildkit-${BUILDKIT_TARGET}
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