docker - 如何构建自定义 nginx :alpine based container listening on port other than 80?

Question

我需要一个基于 nginx:alpine 的 Docker 容器从端口 8080 提供 http 内容，但 nginx:alpine 默认监听端口 80。
构建自定义容器时如何更改端口？

Answer 1

选项 1(推荐):设置新的配置文件

创建一个包含以下内容的本地 default.conf* 文件:

server {
    listen       8080;
    server_name  localhost;

    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }

    # redirect server error pages to the static page /50x.html
    #
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
}

* 超出 8080 端口，自定义以上内容以满足您的需求

复制default.conf到自定义容器[Dockerfile]:

FROM nginx:alpine
## Copy a new configuration file setting listen port to 8080
COPY ./default.conf /etc/nginx/conf.d/
EXPOSE 8080
CMD ["nginx", "-g", "daemon off;"]

选项 2:更改 nginx 默认配置 [Dockerfile]

FROM nginx:alpine
## Make a copy of default configuration file and change listen port to 8080
RUN cp /etc/nginx/conf.d/default.conf /etc/nginx/conf.d/default.conf.orig && \
    sed -i 's/listen[[:space:]]*80;/listen 8080;/g' /etc/nginx/conf.d/default.conf
EXPOSE 8080
CMD ["nginx", "-g", "daemon off;"]

当然，备份原始配置是可选的