如何把Nginx放在Golang应用程序前面的dockerised环境中

如果你想把Nginx放在Go HTTP服务器前面，你可以使用下面的例子。最后，你可以通过6000 端口（Nginx）或8080 端口（Go）访问API。

结构

.
├── cmd
│   └── server.go
├── docker
│   └── dev
│       ├── docker-compose.yaml
│       ├── go
│       │   └── Dockerfile
│       └── nginx
│           ├── Dockerfile
│           └── app.conf
├── go.mod
└── go.sum

文件

cmd/server.go

package main

import (
	"fmt"
	"log"
	"net/http"

	"github.com/google/uuid"
)

func handler(w http.ResponseWriter, _ *http.Request) {
	w.Write([]byte(uuid.New().String()))
}

func main() {
	http.HandleFunc("/", handler)
	fmt.Println("Server is running ...")
	log.Fatal(http.ListenAndServe(":8080", nil))
}

docker/dev/docker-compose.yaml

version: "3.4"

services:

  football_api_go:
    build:
      context: "../.."
      dockerfile: "docker/dev/go/Dockerfile"
    hostname: "football-api-go"

  football_api_nginx:
    build:
      context: "../.."
      dockerfile: "docker/dev/nginx/Dockerfile"
    hostname: "football-api-nginx"
    ports:
      - "6000:80"
    depends_on:
      - "football_api_go"

docker/dev/go/Dockerfile

#
# STAGE 1: prepare
#
FROM golang:1.13.1-alpine3.10 as prepare

WORKDIR /source

COPY go.mod .
COPY go.sum .

RUN go mod download

#
# STAGE 2: build
#
FROM prepare AS build

COPY . .

RUN CGO_ENABLED=0 go build -ldflags "-s -w" -o bin/server -v cmd/server.go

#
# STAGE 3: run
#
FROM scratch as run

COPY --from=build /source/bin/server /server

EXPOSE 8080

ENTRYPOINT ["/server"]

docker/dev/nginx/Dockerfile

FROM nginx:1.15.8-alpine

COPY docker/dev/nginx/app.conf /etc/nginx/conf.d/default.conf

EXPOSE 80

docker/dev/nginx/app.conf

server {
    listen 80 default_server;

    location / {
        proxy_set_header X-Request-Id $request_id;
        proxy_set_header Host $host;

        proxy_pass http://football_api_go:8080/;
    }
}

go.mod

module football-api

go 1.13

require github.com/google/uuid v1.1.1 // indirect

构建

github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=

构建

码头

$ docker-compose -f docker/dev/docker-compose.yaml up --build

Building football_api_go
Successfully built 74e284b2da5c
Successfully tagged dev_football_api_go:latest

Building football_api_nginx
Successfully built 12eabebd6b5f
Successfully tagged dev_football_api_nginx:latest

Recreating dev_football_api_go_1 ... done
Recreating dev_football_api_nginx_1 ... done

Attaching to dev_football_api_go_1, dev_football_api_nginx_1
football_api_go_1     | Server is running ...

$ curl -i http://0.0.0.0:6000
HTTP/1.1 200 OK
Server: nginx/1.15.8
Date: Thu, 26 Dec 2019 15:13:12 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 36
Connection: keep-alive

96d16744-c128-48ce-b9ff-5ae2fc0e3f05

主机操作系统

$ go build -ldflags "-s -w" -o bin/server -v cmd/server.go
command-line-arguments

$ bin/server 
Server is running ...

$ curl -i http://0.0.0.0:8080
HTTP/1.1 200 OK
Date: Thu, 26 Dec 2019 15:16:07 GMT
Content-Length: 36
Content-Type: text/plain; charset=utf-8

cecaabd0-d224-45cc-91c2-5c77f9627611