dockerfile指令

案例

 构建go(gin)项目

FROM golang:alpine

# 为我们的镜像设置必要的环境变量
ENV GO111MODULE=on 
    CGO_ENABLED=0 
    GOOS=linux 
    GOARCH=amd64 
    GOPROXY="https://goproxy.cn,direct"

WORKDIR /home/www/iter

# 将代码复制到容器中
COPY . .

RUN go mod tidy
# 将我们的代码编译成二进制可执行文件  可执行文件名为 app
RUN go build -o app ./main.go

## 移动到用于存放生成的二进制文件的 /dist 目录
WORKDIR /dist
#
#二进制文件
RUN cp /home/www/iter/app .

# 声明服务端口
EXPOSE 9089

# 启动容器时运行的命令
CMD ["/dist/app"]

构建node项目

FROM node:latest

WORKDIR /3d_chooser_service
COPY . .

RUN npm --registry https://registry.npm.taobao.org install

RUN npm run build

EXPOSE 3000

CMD node ./service/app.js

 nginx

FROM nginx:1.16

COPY dist/ /usr/share/nginx/html

COPY default.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

default.conf

server {

  listen 80;
  server_name localhost; #填写绑定证书的域名

  root /usr/share/nginx/html;

  # Add index.php to the list if you are using PHP
  index index.php index.html index.htm index.nginx-debian.html;

  location /dev-api {
    proxy_set_header Host $host; #保留代理之前的host
    proxy_set_header X-Real-IP $remote_addr; #保留代理之前的真实客户端ip
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header HTTP_X_FORWARDED_FOR $remote_addr; #在多级代理的情况下，记录每次代理之前的客户端真实ip

    #       limit_req zone=myRateLimit burst=20 nodelay;

    proxy_pass http://192.168.10.231:9031/;
    proxy_redirect default; #指定修改被代理服务器返回的响应头中的location头域跟refresh头域数值

  }

  location / {
    # First attempt to serve request as file, then
    # as directory, then fall back to displaying a 404.
    #try_files $uri $uri/ =404;
    #   limit_req zone=myRateLimit burst=20 nodelay;
    index index.html index.php index.htm index.nginx-debian.html;
    try_files $uri $uri/ /index.html;

  }



}

 java

FROM openjdk:8-jdk-alpine
#启动jar包
VOLUME /tmp

ADD hongyi-system/target/hongyi-system-1.0.0.jar app.jar

#RUN bash -c "touch /app.jar"

EXPOSE 8086

ENTRYPOINT ["java", "-jar", "app.jar", "--spring.profiles.active=dev", "--server.port=8086", "> /log/app.log"]

 go

FROM golang:latest
WORKDIR /root/micro-go-course/section10/userCOPY//root/micro-go-course/section10/user
RUN go env-w GOPROXY=https://goproxy.cn,directRUN go build -o user
ENTRYPOINT["./user"]

指令

CMD  启动指令，某些情况下时必要的