内容来源于 Stack Overflow，遵循 CC BY-SA 4.0 许可协议进行翻译与使用。IT领域专用引擎提供翻译支持
腾讯云小微IT领域专用引擎提供翻译支持
我正在尝试使用以下命令构建一个码头映像
docker build -t blog .
以及Dockerfile：
FROM ruby:2.4 RUN apt-get update -yqq \ && apt-get install -yqq --no-install-recommends \ postgresql-client \ && rm -rf /var/lib/apt/lists WORKDIR /usr/src/app COPY Gemfile* . RUN bundle install COPY . . EXPOSE 3000 CMD rails server -b 0.0.0.0
我得到的结果如下：
Step 1 : FROM ruby:2.4 ---> ef296fcb8c7c Step 2 : RUN apt-get update -yqq && apt-get install -yqq --no-install-recommends postgresql-client && rm -rf /var/lib/apt/lists ---> Running in 18bfd303925d debconf: delaying package configuration, since apt-utils is not installed Selecting previously unselected package postgresql-client-common. (Reading database ... 21168 files and directories currently installed.) Preparing to unpack .../postgresql-client-common_165+deb8u2_all.deb ... Unpacking postgresql-client-common (165+deb8u2) ... Selecting previously unselected package postgresql-client-9.4. Preparing to unpack .../postgresql-client-9.4_9.4.10-0+deb8u1_amd64.deb ... Unpacking postgresql-client-9.4 (9.4.10-0+deb8u1) ... Selecting previously unselected package postgresql-client. Preparing to unpack .../postgresql-client_9.4+165+deb8u2_all.deb ... Unpacking postgresql-client (9.4+165+deb8u2) ... Setting up postgresql-client-common (165+deb8u2) ... Setting up postgresql-client-9.4 (9.4.10-0+deb8u1) ...
