通过环境变量传递参数

在使用docker compose运行openresty时，通过使用环境变量传递参数。

详细用法请参考链接

.env定义变量

properties

proxyTargetProtocol=https
proxyTargetHost=163.com
proxyTargetPort=443

docker-compose.yaml通过环境变量传递参数到容器实例中

yaml

version: "3.0"

services:
  openresty:
    image: registry.cn-hangzhou.aliyuncs.com/future-public/demo-openresty-base-dev
    ports:
      - 80:80
    environment:
      - proxyTargetProtocolEnv=${proxyTargetProtocol}
      - proxyTargetHostEnv=${proxyTargetHost}
      - proxyTargetPortEnv=${proxyTargetPort}
      - TZ=Asia/Shanghai
    volumes:
      - ./nginx.conf:/usr/local/openresty/nginx/conf/nginx.conf

设置环境变量到nginx变量中

nginx

# nginx.conf  --  docker-openresty
#
# This file is installed to:
#   `/usr/local/openresty/nginx/conf/nginx.conf`
# and is the file loaded by nginx at startup,
# unless the user specifies otherwise.
#
# It tracks the upstream OpenResty's `nginx.conf`, but removes the `server`
# section and adds this directive:
#     `include /etc/nginx/conf.d/*.conf;`
#
# The `docker-openresty` file `nginx.vh.default.conf` is copied to
# `/etc/nginx/conf.d/default.conf`.  It contains the `server section
# of the upstream `nginx.conf`.
#
# See https://github.com/openresty/docker-openresty/blob/master/README.md#nginx-config-files
#

#user  nobody;
#worker_processes 1;

# Enables the use of JIT for regular expressions to speed-up their processing.
pcre_jit on;



#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


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

    # Enables or disables the use of underscores in client request header fields.
    # When the use of underscores is disabled, request header fields whose names contain underscores are marked as invalid and become subject to the ignore_invalid_headers directive.
    # underscores_in_headers off;

    #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  logs/access.log  main;

        # Log in JSON Format
        # log_format nginxlog_json escape=json '{ "timestamp": "$time_iso8601", '
        # '"remote_addr": "$remote_addr", '
        #  '"body_bytes_sent": $body_bytes_sent, '
        #  '"request_time": $request_time, '
        #  '"response_status": $status, '
        #  '"request": "$request", '
        #  '"request_method": "$request_method", '
        #  '"host": "$host",'
        #  '"upstream_addr": "$upstream_addr",'
        #  '"http_x_forwarded_for": "$http_x_forwarded_for",'
        #  '"http_referrer": "$http_referer", '
        #  '"http_user_agent": "$http_user_agent", '
        #  '"http_version": "$server_protocol", '
        #  '"nginx_access": true }';
        # access_log /dev/stdout nginxlog_json;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name  localhost;

        #charset koi8-r;
        #access_log  /var/log/nginx/host.access.log  main;

        # 设置环境变量到nginx变量中
        set_by_lua $proxyTargetProtocolInternal 'return os.getenv("proxyTargetProtocolEnv")';
        set_by_lua $proxyTargetHostInternal 'return os.getenv("proxyTargetHostEnv")';
        set_by_lua $proxyTargetPortInternal 'return os.getenv("proxyTargetPortEnv")';

        # nginx配置引用变量
        location / {
            resolver 114.114.114.114;
            proxy_pass $proxyTargetProtocolInternal://$proxyTargetHostInternal:$proxyTargetPortInternal;
        }

        # lua脚本引用变量
        location /lua {
            content_by_lua_block {
                ngx.header.content_type = "text/plain;charset=utf-8";
                local response = "proxy target host: " .. ngx.var.proxyTargetHostInternal;
                ngx.say(response);
            }
        }

        #error_page  404              /404.html;

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

    # Don't reveal OpenResty version to clients.
    # server_tokens off;
}

# 声明环境变量
env proxyTargetProtocolEnv;
env proxyTargetHostEnv;
env proxyTargetPortEnv;

通过环境变量传递参数 ​

通过环境变量传递参数