如何构建不链接到 musl libc 的 go 可执行文件

Question

所以：官方 Go 构建容器基于 Alpine。Alpine 使用musl作为 libc 而不是 glibc。我需要在可以在使用 glibc 的 Ubuntu 上运行的容器中构建一个 Go 可执行文件。我怎么办使官方 GoLang 构建容器使用 glibc 或在基于 Ubuntu 的容器上构建我的 GoLang 项目我不能使用Disable CGO解决方案，因为我的 Go 代码是 FUSE 驱动程序，它需要 CGO

Answer 1

该golang:latest图像基于 debian bullseye。除了使用此映像构建二进制文件外，您不需要任何其他东西，以便它可以在 ubuntu 上按原样运行。

只需使用这一行而不是您当前使用的来启动您的 dockerfile。

FROM golang:latest

Answer 2

从 Ubuntu 基础映像开始，并在其中设置 golang。发现它们时添加依赖项。如果你不太关心go的版本，那么Ubuntu的官方包就可以了，你不必下载官方的go release。

这对我们有用（linux / mac 用户）：

文件

FROM ubuntu:20.04 as base

ARG BUILDPLATFORM

ARG TARGETPLATFORM

RUN echo "Building for $TARGETPLATFORM on $BUILDPLATFORM"

# Enable super fast apt caches for use with buildkit --mount=type=cache

RUN rm -f /etc/apt/apt.conf.d/docker-clean; \

    echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache

# Install dependencies for building

# --mount docs: https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/syntax.md

RUN --mount=type=cache,sharing=locked,target=/var/cache/apt \

    --mount=type=cache,sharing=locked,target=/var/lib/apt \

    apt-get update && \

    DEBIAN_FRONTEND=noninteractive apt-get install -y \

    awscli \

    curl \

    gcc \

    git \

    liblxc-dev \

    liblxc1 \

    lxc-utils \

    make \

    parallel \

    pkg-config \

    upx-ucl \

    && apt-get clean && rm -rf /var/lib/apt/lists/*

ARG GOVERSION=1.15

ARG TARGETARCH

ADD https://dl.google.com/go/go${GOVERSION}.linux-${TARGETARCH}.tar.gz /tmp/golang.tar.gz

RUN cd /opt && tar zxf /tmp/golang.tar.gz && rm /tmp/golang.tar.gz

# Set timezone to UTC

RUN echo 'UTC' > /etc/timezone && \

    dpkg-reconfigure -f noninteractive tzdata

# Set up go environment variables

ENV GOPATH=/opt/gopath

ENV GOCACHE=/opt/gocache

ENV GOROOT=/opt/go

ENV PATH="$GOROOT/bin/:$PATH"

# Install go-bindata, it is used when building drone

# go get installs to: $GOPATH/src and $GOPATH/bin

# We then move the binary to $GOROOT so we can change GOPATH in our builds

RUN go get -u github.com/go-bindata/go-bindata/... && \

    mv $GOPATH/bin/go-bindata $GOROOT/bin/go-bindata

# Install https://staticcheck.io for statistical analysis of go code

RUN go get honnef.co/go/tools/cmd/staticcheck && \

    mv $GOPATH/bin/staticcheck $GOROOT/bin/staticcheck

# Install https://github.com/kyoh86/richgo for pretty color output

RUN go get -u github.com/kyoh86/richgo && \

    mv $GOPATH/bin/richgo $GOROOT/bin/richgo

# Set up working dir for this project

WORKDIR /workspace

#########

# TESTS #

#########

# Install dependencies for running tests

RUN --mount=type=cache,sharing=locked,target=/var/cache/apt \

    --mount=type=cache,sharing=locked,target=/var/lib/apt \

    apt-get update && \

    DEBIAN_FRONTEND=noninteractive apt-get install -y \

    pigz \

    bind9-host \

    && apt-get clean && rm -rf /var/lib/apt/lists/*

# Setup git for tests

RUN git config --global user.email "[e-mail]" && \

    git config --global user.name "Test Project"

FROM base as ci

ENV GOPATH=/workspace/.cache/gopath

ENV GOCACHE=/workspace/.cache/gocache

RUN mkdir -p /root/.parallel; touch /root/.parallel/will-cite

#############

# COPY CODE #

#############

#COPY go.mod go.sum /workspace/

#WORKDIR /workspace

#RUN go mod download

#COPY ./ /workspace/

# A note on folders

# /opt/go is where go itself is installed

# /opt/gopath is where `go get` installs packages

# /opt/gopath is also what `go mod` uses for package cache

# /builds is where the current project folder should be mounted

运行它：

docker.sh

docker build -q --target base -t ubuntu-go . ||

docker build    --target base -t ubuntu-go .

docker run -i -t --rm --init --env-file=.env \

  --volume /src/myproject:/workspace:delegated \

  --volume /src/myproject/.docker/gopath:/opt/gopath:delegated \

  --volume /src/myproject/.docker/gocache:/opt/gocache:delegated \

  ubuntu-go "$@"

例如

$ bash -x docker.sh bash -c 'seq 1 4 ; whoami'

+ docker build -q --target base -t ubuntu-go .

sha256:03eaf19625efd7f5760d14ea0d741d4454a9f280cd70c5c600bea63bbca70984

+ docker run -i -t --rm --init --env-file=.env \

  --volume /src/myproject:/workspace:delegated \

  --volume /src/myproject/.docker/gopath:/opt/gopath:delegated \

  --volume /src/myproject/.docker/gocache:/opt/gocache:delegated \

   ubuntu-go bash -c 'seq 1 4 ; whoami'

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root

我们的 ldd deps 看起来像这样：

 linux-vdso.so.1 (…)

 libpthread.so.0 => /lib64/libpthread.so.0 (…)

 liblxc.so.1 => /usr/lib64/liblxc.so.1 (…)

 libutil.so.1 => /lib64/libutil.so.1 (…)

 libdl.so.2 => /lib64/libdl.so.2 (…)

 libc.so.6 => /lib64/libc.so.6 (…)

 /lib64/ld-linux-x86-64.so.2 (…)

 libcrypto.so.1.1 => /usr/lib64/libcrypto.so.1.1 (…)

 libseccomp.so.2 => /usr/lib64/libseccomp.so.2 (…)

 libcap.so.2 => /lib64/libcap.so.2 (…)

 libgcc_s.so.1 => /usr/lib/gcc/x86_64-pc-linux-gnu/9.4.0/libgcc_s.so.1 (…)