bash - docker容器nginx启动但一直挂起

Question

我的dockerfile:

FROM AWS_ECR_IMAGE

RUN apt-get update && apt-get install -y \
        cron \
        python-dev \
        git \
        zlib1g-dev \
        libffi-dev \
        libssl-dev \
        autotools-dev \
        automake \
        libbz2-dev \
        libaio-dev \
        libsasl2-dev \
        python-pip
RUN pip install boto boto3 awscli

# Install Nginx.
RUN \
  add-apt-repository -y ppa:nginx/stable && \
  apt-get update && \
  apt-get install -y nginx && \
  rm -rf /var/lib/apt/lists/* && \
  echo "\ndaemon off;" >> /etc/nginx/nginx.conf && \
  chown -R www-data:www-data /var/lib/nginx

# Define mountable directories.
VOLUME ["/etc/nginx/sites-enabled", "/etc/nginx/certs", "/etc/nginx/conf.d", "/var/log/nginx", "/var/www/html"]

# Define working directory.
WORKDIR /etc/nginx

# Define default command.
CMD ["nginx"]

COPY nginx_conf /etc/nginx/sites-available/default

# Start service, replace server name, update web ui
COPY main.sh /opt/annotation-pipeline-docs/main.sh
RUN chmod 0755 /opt/annotation-pipeline-docs/main.sh
ENTRYPOINT [ "sh", "-c", "/opt/annotation-pipeline-docs/main.sh" ]

# Expose ports.
EXPOSE 80

我的入口点bash文件(容器运行时，我需要首先更新服务器名称)是:

#!/bin/bash -e
/usr/local/bin/aws s3 sync s3://${S3_Bucket}/docs/${ENVIRONMENT}/HEAD/ /var/www/html/

if [ "$ENVIRONMENT" == "prod" ]
then
  sed -i.bak "s/REPLACE_ME/example.com/g" /etc/nginx/sites-available/default
else
  sed -i.bak "s/REPLACE_ME/example-$ENVIRONMENT.com/g" /etc/nginx/sites-available/default
fi

nginx 

while true; do
  sleep 60
  echo "s3 sync again:"
  /usr/local/bin/aws s3 sync s3://${S3_Bucket}/docs/${ENVIRONMENT}/HEAD/ /var/www/html/
done

问题是什么时候

nginx

运行，它将永远卡在终端上:


而while循环将永远不会被调用。有谁知道为什么挂以及如何解决它？请帮忙，谢谢。

Answer 1

我的问题的原因是等待流量，直到Nginx开始释放bash之前，while循环永远不会被调用。但是，Nginx将在前台运行，而不会释放焦点。

我尝试的解决方案不是让Nginx作为前台服务运行，而是将其更改为在后台运行。由于这是我的容器中唯一的服务，因此应该没有问题。

更改的代码只是在我的dockerfile中的行下面删除了:

echo "\ndaemon off;" >> /etc/nginx/nginx.conf

这将使Nginx成为前台服务