docker - 在 Docker 构建期间安装 brew 包不起作用

Question

我正在尝试在 docker 构建期间使用以下 dockerfile 安装 arduino-cli(一个 Homebrew 程序包)。

docker 镜像似乎构建正确，但在我的网络服务器上运行时，我在日志中得到以下输出。

注意这个问题好像和Installing homebrew packages during Docker build类似，但接受的答案似乎对我没有帮助。

这是否表明 arduino-cli 没有正确安装，或者只是路径没有正确链接？

FileNotFoundError: [Errno 2] No such file or directory: 'arduino-cli': 'arduino-cli'

FROM python:3.6

RUN apt-get update && apt-get install -y git curl binutils clang make
RUN git clone https://github.com/Homebrew/brew ~/.linuxbrew/Homebrew \
&& mkdir ~/.linuxbrew/bin \
&& ln -s ../Homebrew/bin/brew ~/.linuxbrew/bin \
&& eval $(~/.linuxbrew/bin/brew shellenv) \
&& brew --version \
&& brew install arduino-cli \
&& arduino-cli version
ENV PATH=~/.linuxbrew/bin:~/.linuxbrew/sbin:$PATH

RUN mkdir -p /opt/services/djangoapp/src
WORKDIR /opt/services/djangoapp/src

RUN pip install gunicorn django psycopg2-binary whitenoise

COPY . /opt/services/djangoapp/src

EXPOSE 8000

COPY init.sh /usr/local/bin/
    
RUN chmod u+x /usr/local/bin/init.sh
ENTRYPOINT ["init.sh"]

Answer 1

这很可能是 $PATH 问题。上述答案对您不起作用的原因是您在 $PATH 尚未更改 时尝试使用 arduino-cli。这应该使它工作:

RUN git clone https://github.com/Homebrew/brew ~/.linuxbrew/Homebrew \
&& mkdir ~/.linuxbrew/bin \
&& ln -s ../Homebrew/bin/brew ~/.linuxbrew/bin \
&& eval $(~/.linuxbrew/bin/brew shellenv) \
&& brew --version \
&& brew install arduino-cli

# first change PATH
ENV PATH=~/.linuxbrew/bin:~/.linuxbrew/sbin:$PATH

# then run
RUN arduino-cli version

# not vice-versa