为什么Docker容器以代码0退出并且不公开9000端口进行连接

Question

任何人都可以帮助我了解为什么我的Docker容器以状态0退出或对此进行进一步调试。我试图在CentOS7上运行Phalcon框架没有运气：

php-phalcon exited with code 0

docker-compose-yml是这样的：

...
  php-phalcon:
    build: docker/php-phalcon
    container_name: php-phalcon
    working_dir: /application
    volumes:
      - ./application:/application
      - ./docker/php-phalcon/php-ini-overrides.ini:/etc/php/7.3/fpm/conf.d/99-overrides.ini

Dockerfile如下：

FROM centos:centos7

ENV TERM=linux

RUN yum -y install deltarpm \
    && yum -y install http://rpms.remirepo.net/enterprise/remi-release-7.rpm \
    && yum -y install epel-release yum-utils \
    && yum-config-manager --disable remi-php54 \
    && yum-config-manager --enable remi-php73 \
    && yum -y install \
        ca-certificates \
        curl \
        unzip \
        php \
        php-cli \
        php-common \
        php-mbstring \
        php-xml \
        php-json \
        php-apcu \
        php-apcu-bc \
        php-mysqlnd \
        php-zip \
        php-devel \
        php-gd \
        php-mcrypt \
        php-opcache \
        php-readline \
        php-curl \
        php-zip \
        php-pear \
        php-bcmath \
    && curl -sS https://getcomposer.org/installer | php -- --install-dir=/usr/local/bin --filename=composer \
    && composer global require hirak/prestissimo \
    && composer clear-cache \
    && yum -y clean all \
    && rm -rf /tmp/* /var/tmp/* /usr/share/doc/* ~/.composer

RUN echo 'd /run/php-fpm 755 root root' >> /usr/lib/tmpfiles.d/php-fpm.conf
RUN yum install -y php-fpm \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/doc/*

COPY overrides.conf /etc/php/7.3/fpm/pool.d/z-overrides.conf

WORKDIR "/application"

RUN curl -s https://packagecloud.io/install/repositories/phalcon/stable/script.rpm.sh | bash

RUN yum update -y \
    && yum install -y php73u-phalcon

CMD ["/usr/sbin/php-fpm", "-O" ]

EXPOSE 9000

类似的配置，但基于Ubuntu的预期工作。

提前谢谢！

更新

通过@RemiCollet建议，我已将php-amp start命令更改为

CMD ["/usr/sbin/php-fpm", "--nodaemonize", "--force-stderr" ]

它不会像以前那样失败，但是不会暴露9000端口