我正在尝试学习如何将docker
compose与nginx容器的简单设置结合使用，该设置将请求重新路由到ghost容器。我正在使用标准的鬼影图像，但是有一个自定义的nginx图像（继承自标准图像）。

当我使用“ docker-compose up”运行合成文件时，它会立即退出，而“
docker_nginx_1以代码0退出”。但是，当我手动构建并运行它时，它运行良好，并且可以将浏览器导航到该容器并查看默认的nginx页面。我对撰写文件的误解是什么导致其行为与自定义构建有所不同？我该如何更改才能使其继续运行？

免责声明：我同时也在学习nginx，因此一次学习两件事可能会给我带来不必要的问题。

编辑：原始文件要复杂一些，但我已将问题简化为：如果我对自定义映像使用build命令，该自定义映像除了从默认的nginx映像继承外什么也不做，因此会立即退出。如果我使用默认的nginx图像，它将起作用。这些是现在相关的文件：

撰写文件：

ghost:
 expose:
   - "2368"
 image: ghost

nginx:
  # image: nginx << If I use this instead of my custom build, it doesn't exit
  build: ./nginx
  ports:
    - "80:80"
    - "443:443"
  links:
   - ghost

nginx / Dockerfile：

FROM nginx

原始文件（具有与上述相同的撰写文件）：

nginx / Dockerfile：

FROM nginx
RUN rm /etc/nginx/nginx.conf
COPY conf/nginx.conf /etc/nginx/nginx.conf
COPY conf/sites-available/ghost /etc/nginx/sites-available/ghost
RUN mkdir /etc/nginx/sites-enabled
RUN ln -s /etc/nginx/sites-available/ghost /etc/nginx/sites-enabled/ghost

EXPOSE 80 443

# Is this even the right command I have no idea

CMD service nginx start

nginx / conf / nginx.conf：

daemon off;

user  nginx;
# Let nginx figure out the processes I guess
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;


events {
    worker_connections  1024;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
}

nginx / conf / sites-available / ghost

server {
  listen 80;
  server_name 127.0.0.1;
  access_log /var/log/nginx/localhost.log;

  location / {
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header HOST $http_host;
    proxy_set_header X-NginX-Proxy true;

    proxy_pass http://0.0.0.0:2368;
    proxy_redirect off;
  }
}

运行撰写：

plays-MacBook-Pro:docker play$ docker-compose up
Creating docker_ghost_1...
Creating docker_nginx_1...
Attaching to docker_ghost_1, docker_nginx_1
docker_nginx_1 exited with code 0
Gracefully stopping... (press Ctrl+C again to force)
Stopping docker_ghost_1... done

手动运行：

plays-MacBook-Pro:nginx play$ docker build --no-cache -t nginx_custom .
Sending build context to Docker daemon 8.704 kB
Step 0 : FROM nginx
 ---> 914c82c5a678
Step 1 : RUN rm /etc/nginx/nginx.conf
 ---> Running in 4ce9de96bb36
 ---> 98f97a9da4fc
Removing intermediate container 4ce9de96bb36
Step 2 : ADD conf/nginx.conf /etc/nginx/nginx.conf
 ---> dd3e089208a9
Removing intermediate container 36b9a47e0806
Step 3 : ADD conf/sites-available/ghost /etc/nginx/sites-available/ghost
 ---> 55fae53e5810
Removing intermediate container a82741d24af4
Step 4 : RUN mkdir /etc/nginx/sites-enabled
 ---> Running in 7659ead01b7b
 ---> 406be1c42394
Removing intermediate container 7659ead01b7b
Step 5 : RUN ln -s /etc/nginx/sites-available/ghost /etc/nginx/sites-enabled/ghost
 ---> Running in e9658a08affa
 ---> 021a84216e8a
Removing intermediate container e9658a08affa
Step 6 : EXPOSE 80 443
 ---> Running in 230e4523794c
 ---> 23d85e1a04cb
Removing intermediate container 230e4523794c
Step 7 : CMD service nginx start
 ---> Running in 209e129cae21
 ---> d7004d6fa223
Removing intermediate container 209e129cae21
Successfully built d7004d6fa223
plays-MacBook-Pro:nginx play$ docker run -t nginx_custom
[It sits here on an empty line, running in the background]