Docker镜像 Node+Nginx
- 项目中创建文件 Dockerfile：
# node基础镜像
FROM node:18
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
RUN cd ./; npm run build
WORKDIR /app
# nginx基础镜像
FROM nginx:alpine
# 将生成文件移至nginx的html目录
COPY ./dist /usr/share/nginx/html/
# 为防止冲突，移除原nginx配置
RUN rm -rf /etc/nginx/conf.d/default.conf
# 将项目中的nginx配置复制到宿主机
COPY nginx/nginx.conf /etc/nginx/
RUN mkdir /etc/nginx/logs
# 启动nginx
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
- nginx配置文件nginx.conf
user nobody;
worker_processes 8;
pid /etc/nginx/logs/nginx.pid;
events {
use epoll;
worker_connections 100000;
}
worker_rlimit_nofile 100000;
http {
include mime.types;
default_type application/octet-stream;
server_tokens off;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 8m;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 0;
fastcgi_connect_timeout 30;
fastcgi_send_timeout 30;
fastcgi_read_timeout 30;
fastcgi_buffer_size 64k;
fastcgi_buffers 4 64k;
fastcgi_busy_buffers_size 128k;
fastcgi_temp_file_write_size 128k;
gzip on;
gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 2;
gzip_types text/plain application/x-javascript text/css application/xml text/javascript;
gzip_vary on;
charset utf-8;
access_log off;
log_not_found off;
error_page 400 403 405 408 /40x.html;
error_page 500 502 503 504 /50x.html;
log_format main '$remote_addr - $remote_user [$time_local] "$host$request_uri" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
server {
listen 80 default;
add_header Content-Security-Policy upgrade-insecure-requests;
gzip on;
access_log /var/log/nginx/afm.access.log;
location / {
root /usr/share/nginx/html/;
index index.html;
try_files $uri $uri/ /index.html;
}
location ~ ^/(api) {
# 代理后端服务
proxy_pass https://xxxxxxxx;
proxy_set_header Host $host;
proxy_redirect default;
add_header Access-Control-Allow-Origin *;
add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
add_header Access-Control-Allow-Headers '*';
if ($request_method = 'OPTIONS') {
return 204;
}
}
}
}
- 执行
docker build -t imageName .(注意别把点丢了。。) - 执行
docker run -d -p 80:80 --name containerName imageName
实现过程中的几个坑：
- docker ps ports 为空，因为在dockerfile少了启动nginx的命令
EXPOSE 80
CMD ["nginx", "-g", "daemon off;"]
- nginx.conf文件中第2行会报user nobody。实际是user变量已经被定义，可以查找下nginx目录里是不是存在多个nginx.con文件，所以导致变量冲突。
[emerg] "user" directive is not allowed here in /etc/nginx/conf.d/nginx.conf:2
- nginx.pid找不到，在Dockerfile里添加对应目录可解决。
RUN mkdir /etc/nginx/logs
# [[error] open() "/usr/local/var/run/nginx.pid" failed (2: No such file or directory)](https://www.cnblogs.com/fancyLee/p/8931814.html)
几个比较常用docker命令：
- 已经启动过的容器，需要使用
docker logs containerName
docker cp containerName:containerPath localPath
docker ps -a(不加-a只显示运行中的容器)，需要查看各容器状态docker stop containerName停止容器服务docker rm containerName移除容器docker logs containerName这个方法很有必要，在头疼排查不到docker问题出在哪儿的时候，通过查看日志定位问题。docker cp containerName:containerPath localPath将容器内文件下载至本地指纹路径下，方便排查文件情况
