useradd Dockerfile 中的无效用户

Question

我正在尝试将 Docker 映像与 Laravel + Microsoft SQL 驱动程序一起使用。

我的泊坞窗文件：

FROM php:7.2-apache

ENV ACCEPT_EULA=Y

# Microsoft SQL Server Prerequisites
RUN apt-get update \
    && curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add - \
    && curl https://packages.microsoft.com/config/debian/9/prod.list \
        > /etc/apt/sources.list.d/mssql-release.list \
    && apt-get install -y --no-install-recommends \
        locales \
        apt-transport-https \
    && echo "en_US.UTF-8 UTF-8" > /etc/locale.gen \
    && locale-gen \
    && apt-get update \
    && apt-get -y --no-install-recommends install \
        unixodbc-dev \
        msodbcsql17

RUN docker-php-ext-install mbstring pdo pdo_mysql \
    && pecl install sqlsrv pdo_sqlsrv xdebug \
    && docker-php-ext-enable sqlsrv pdo_sqlsrv xdebug

COPY index.php /var/www/html/


# We need a user with the same UID/GID as the host user
# so when we execute CLI commands, all the host file's permissions and ownership remain intact.
# Otherwise commands from inside the container would create root-owned files and directories.
ARG uid
RUN useradd -G www-data,root -o -u $uid -d /home/devuser devuser
RUN mkdir -p /home/devuser/.composer && \
    chown -R devuser:devuser /home/devuser

使用 docker-compose build 进行构建时，我收到无效用户：

useradd: invalid user ID '-d'
The command '/bin/sh -c useradd -G www-data,root -o -u $uid -d /home/devuser devuser' returned a non-zero code: 3

Answer 1

就我而言，原因是，我尝试直接使用构建图像

docker build --tag imagename .

而不是使用

docker-compose build app

从提供 $uid 值的地方。