docker - 容器停止的原因是: “httpd: Could not open configuration file/etc/httpd/conf/httpd.conf: No such file or directory”，为什么？

Question

我正在研究PyroCMS的Docker版本。这是我拥有最新文件的repository。如您所见，我正在运行一个堆栈:CentOS 7(带有Supervisord)，MySQL，Apache和PHP。这是docker-compose.yml文件:

version: '2.1'
services:
    httpd:
        build: docker/httpd
        ports:
            - "8080:80"
        volumes_from:
            - php-fpm
    php-fpm:
        build:
            context: docker/php-fpm
            args:
                INSTALL_XDEBUG: "false"
                INSTALL_MONGO: "false"
                INSTALL_REDIS: "false"
                INSTALL_HTTP_REQUEST: "false"
                INSTALL_UPLOAD_PROGRESS: "false"
                INSTALL_XATTR: "false"
        depends_on:
            db:
                condition: service_healthy
    db:
        image: mysql
        healthcheck:
            test: "exit 0"
        environment:
            MYSQL_ROOT_PASSWORD: ${MYSQL_ROOT_PASSWORD}
            MYSQL_DATABASE: ${MYSQL_DATABASE}
            MYSQL_USER: ${MYSQL_USER}
            MYSQL_PASSWORD: ${MYSQL_PASSWORD}

这是 Dockerfile图片的 httpd:

FROM reynierpm/centos7-supervisor
RUN yum install -y httpd nano && \
    yum clean all && rm -rf /tmp/yum*
RUN rm -f /etc/httpd/conf/httpd.conf /etc/httpd/conf.d/* /etc/httpd/conf.modules.d/*
COPY container-files /
EXPOSE 80

我遇到了问题，因为 httpd容器以状态1退出并查看日志，我得到以下信息:

httpd_1  | httpd: Could not open configuration file /etc/httpd/conf/httpd.conf: No such file or directory

乍一看，您会说:

您正在删除文件!!!在此行 RUN rm -f /etc/httpd/conf/httpd.conf /etc/httpd/conf.d/* /etc/httpd/conf.modules.d/*
而且您是对的，但是如果仔细看，您会发现我正在将其复制回该行(因为我正在运行最小的Apache配置):

COPY container-files /

我不确定为什么找不到该文件以及为什么容器正在停止和退出，有什么可以看一下并让我知道哪里出错了吗？

Answer 1

您在php-fpm Dockerfile中具有以下代码:

VOLUME ["/data/www", "/etc/httpd"]

而这在docker-compose.yml中:

httpd:
    build: docker/httpd
    ports:
        - "8080:80"
    volumes_from:
        - php-fpm

因此，您的httpd镜像最终会在 /etc/httpd处进行卷装载。该卷的内容将覆盖在构建时烘焙到 httpd图像中的所有内容。