“ELF: not found”和“syntax error: unexpected \"(\"" in Docker container

Question

我正在尝试为beanstalkd-cli. 图像构建成功，但是当我运行时docker run -it myimage，它失败了：

/usr/local/bin/beanstalkd-cli: line 1: ELF: not found
/usr/local/bin/beanstalkd-cli: line 2: syntax error: unexpected "("

这是否意味着构建不好？或者我需要调整ENTRYPOINT和/或CMD？

这是我的 Dockerfile：

FROM alpine:3.5

LABEL maintainer="Coby Tamayo <ctamayo@sitecrafting.com"

# Install openssl, beanstalkd-cli
RUN apk add --update openssl && \
  wget https://github.com/schickling/beanstalkd-cli/releases/download/0.3.0/beanstalkd-cli-linux.tar.gz && \
  tar -xvzf beanstalkd-cli-linux.tar.gz && \
  chmod +x beanstalkd-cli && \
  mv beanstalkd-cli /usr/local/bin/beanstalkd-cli && \
  rm beanstalkd-cli-linux.tar.gz

ENTRYPOINT ["/bin/sh"]
CMD ["/usr/local/bin/beanstalkd-cli"]

更新 1

当我完全删除ENTRYPOINT和 时CMD，运行容器会将我放到一个 shell 中，在那里我可以验证 beanstalkd-cli 是否设置了执行权限：

$ docker run -it myimage
/ # which beanstalkd-cli
/usr/local/bin/beanstalkd-cli
/ # ls -la /usr/local/bin/beanstalkd-cli
-rwxrwxr-x    1 1000     1000       3020529 Feb 23  2015 /usr/local/bin/beanstalkd-cli

只是“为了好玩”，我也尝试只设置ENTRYPOINT，没有命令，因为我真的不关心beanstalkd-cli在这个容器中运行除了命令之外的任何东西：

ENTRYPOINT ["/usr/local/bin/beanstalkd-cli"]
# no more CMD

当我docker run this 时，我得到：

standard_init_linux.go:185: exec user process caused "no such file or directory"

如果我重新添加原始结果，结果相同CMD。嗯？

更新 2

# file /usr/local/bin/beanstalkd-cli
/usr/local/bin/beanstalkd-cli: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.24, BuildID[sha1]=63a19b18574643c1da5bafd5bd56fc26af22ab05, not stripped

# uname -a
Linux 6882ec36481d 4.10.0-40-generic #44~16.04.1-Ubuntu SMP Thu Nov 9 15:37:44 UTC 2017 x86_64 Linux

# /usr/local/bin/beanstalkd-cli
/bin/sh: /usr/local/bin/beanstalkd-cli: not found

Answer 1

诊断问题

使用您的 Dockerfile：

docker run 04d32bac400e '-xlic' 'ldd /usr/local/bin/beanstalkd-cli'

...发出：

+ ldd /usr/local/bin/beanstalkd-cli
    /lib64/ld-linux-x86-64.so.2 (0x7f9044206000)
    libdl.so.2 => /lib64/ld-linux-x86-64.so.2 (0x7f9044206000)
    libpthread.so.0 => /lib64/ld-linux-x86-64.so.2 (0x7f9044206000)
    librt.so.1 => /lib64/ld-linux-x86-64.so.2 (0x7f9044206000)
    libc.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7f9044206000)
    libm.so.6 => /lib64/ld-linux-x86-64.so.2 (0x7f9044206000)
Error loading shared library libgcc_s.so.1: No such file or directory (needed by /usr/local/bin/beanstalkd-cli)
Error loading shared library ld-linux-x86-64.so.2: No such file or directory (needed by /usr/local/bin/beanstalkd-cli)
Error relocating /usr/local/bin/beanstalkd-cli: __gcc_personality_v0: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: __register_atfork: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: __rawmemchr: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: _Unwind_DeleteException: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: _Unwind_RaiseException: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: _Unwind_FindEnclosingFunction: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: _Unwind_GetIP: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: _Unwind_Backtrace: symbol not found
Error relocating /usr/local/bin/beanstalkd-cli: _Unwind_Resume: symbol not found

所以——beanstalkd你使用的库是针对libgcc_s.so.1and链接的ld-linux-x86-64.so.2，这两个都不是由 Alpine 3.5 基础镜像提供的；因此，在尝试运行可执行文件时，“没有这样的文件或目录”。

简单的解决方案

考虑一个更重的基础镜像；例如，以下工作正常：

FROM ubuntu:16.04

LABEL maintainer="Coby Tamayo <ctamayo@sitecrafting.com>"

# Install openssl, beanstalkd-cli
RUN apt-get update
RUN apt-get install -y wget
RUN wget https://github.com/schickling/beanstalkd-cli/releases/download/0.3.0/beanstalkd-cli-linux.tar.gz && \
  tar -xvzf beanstalkd-cli-linux.tar.gz && \
  chmod +x beanstalkd-cli && \
  mv beanstalkd-cli /usr/local/bin/beanstalkd-cli && \
  rm beanstalkd-cli-linux.tar.gz

CMD ["/usr/local/bin/beanstalkd-cli"]