使用Dockerfile构buildDocker镜像时出错

我正在尝试在Dockerfile使用configuration来构buildDockerfile ：

 FROM ubuntu MAINTAINER axiom88guru([e-mail]) Configuration for app below. Run upgrades RUN apt-get update Install basic packages RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs Install Ruby RUN apt-get -qq -y install ruby-full RUN gem install bundler --no-ri --no-rdoc RUN gem install foreman Install rails-new-docker WORKDIR /app RUN git clone https://github.com/axiom88-guru/rails-docker.git /app RUN bundle install --without development test Run rails-new-docker ENV SECRET_KEY_BASE dockerkeybase ENV RAILS_ENV production EXPOSE 5959 CMD foreman start -f Procfile 

当我在bash中运行这些命令时，它们按预期方式工作，但在docker build期间不工作：

 Removing intermediate container 344e99851852 Step 8/14 : WORKDIR /app —> 3c204a395f23 Removing intermediate container 680b1841a3fc Step 9/14 : RUN git clone https://github.com/axiom88-guru/rails-docker.git /app —> Running in d7a9de9f6ab5 /bin/sh: 1: git: not found The command '/bin/sh -c git clone https://github.com/axiom88-guru/rails-docker.git /app' returned a non-zero code: 127 

任何人都可以帮我找出解决scheme吗？

Answer 1

需要安装git，因为基本的ubuntu镜像只提供了一小部分已安装的软件包（这样做是为了保持较小的图像大小）。

 FROM ubuntu MAINTAINER axiom88guru([e-mail]) # Configuration for app below. # Run upgrades RUN apt-get update # Install basic packages RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs git # Install Ruby RUN apt-get -qq -y install ruby-full RUN gem install bundler --no-ri --no-rdoc RUN gem install foreman # Install rails-new-docker WORKDIR /app RUN git clone https://github.com/axiom88-guru/rails-docker.git /app RUN bundle install --without development test # Run rails-new-docker ENV SECRET_KEY_BASE dockerkeybase ENV RAILS_ENV production EXPOSE 5959 CMD foreman start -f Procfile 

这个版本应该工作。 我只是将git添加到第一个apt-get install步骤。