Docker compose build 始终将 ENV 值设置为端口 80答案

【问题标题】：Docker compose build always set ENV Value to port 80Docker compose build 始终将 ENV 值设置为端口 80
【发布时间】：2019-12-30 13:13:39
【问题描述】：

我有以下 dockerfile:-

FROM mcr.microsoft.com/dotnet/core/aspnet:2.2 AS base
WORKDIR /app

FROM mcr.microsoft.com/dotnet/core/sdk:2.2 AS build
WORKDIR /src
COPY ["src/CustomerManagement/CustomerAPI/CustomerAPI.csproj", "src/CustomerManagement/CustomerAPI/"]

COPY . .
WORKDIR "/src/src/CustomerManagement/CustomerAPI"
RUN dotnet build "CustomerAPI.csproj" -c Release -o /app
RUN dotnet restore -s https://api.nuget.org/v3/index.json -s https://www.myget.org/F/autoweb/api/v3/index.json

FROM build AS publish
RUN dotnet publish "CustomerAPI.csproj" -c Release -o /app

EXPOSE 5000/tcp
ENV ASPNETCORE_URLS=http://*:5000
HEALTHCHECK --interval=30s --timeout=3s --retries=1 CMD curl --silent --fail http://localhost:5000/hc || exit 1


FROM base AS final
WORKDIR /app
COPY --from=publish /app .
ENTRYPOINT ["dotnet", "CustomerAPI.dll"]

Docker.compose 文件：-

 customerapi:
    image: ${DOCKER_REGISTRY-}customerapi
    networks:
      - backendpool
    build:
      context: .
      dockerfile: src/CustomerManagement/CustomerAPI/Dockerfile
    depends_on:
      - sqlserver
      - rabbitmq
    ports:
      - "5000"
    environment:
      - ASPNETCORE_ENVIRONMENT=Production

问题描述：-

我已指示 dockerfile 公开端口 5000。当我尝试构建 compose 文件时，它的构建正常，但它从未公开端口 5000。当我检查我的 docker 配置时，它总是设置为端口 80：-

docker 容器镜像配置：- pull through (docker inspect cli)

"DockerVersion": "19.03.1",                                                               
 "Author": "",                                                                             
 "Config": {                                                                               
     "Hostname": "",                                                                       
     "Domainname": "",                                                                     
     "User": "",                                                                           
     "AttachStdin": false,                                                                 
     "AttachStdout": false,                                                                
     "AttachStderr": false,                                                                
     "Tty": false,                                                                         
     "OpenStdin": false,                                                                   
     "StdinOnce": false,                                                                   
     "Env": [                                                                              
         "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",              
         "ASPNETCORE_URLS=http://+:80",                                                    
         "DOTNET_RUNNING_IN_CONTAINER=true",                                               
         "ASPNETCORE_VERSION=2.2.6"                                                        
     ],                                                                                    
     "Cmd": null,                                                                          
     "Image": "sha256:1632908f5f238edcea0e99468a1584b859d6593bcd7e2a8943233c8d2bd4b983",   
     "Volumes": null,                                                                      
     "WorkingDir": "/app",                                                                 
     "Entrypoint": [                                                                       
         "dotnet",                                                                         
         "CustomerAPI.dll"                                                                         
     ],                                                                                    
     "OnBuild": null,                                                                      
     "Labels": null                                                                        
 },

无论您在 ENV 键值对中设置什么值，它都不会以这种方式设置，并且我很难理解如何告诉 docker compose 文件将 ENV 值设置为 docker 文件中的公开端口？？？

启动 settings.json 文件：-

{
  "iisSettings": {
    "windowsAuthentication": false,
    "anonymousAuthentication": true,
    "iisExpress": {
      "applicationUrl": "http://localhost:5000",
      "sslPort": 0
    }
  },
  "profiles": {
    "IIS Express": {
      "commandName": "IISExpress",
      "launchBrowser": true,
      "launchUrl": "index.html",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      }
    },
    "CustomerAPI": {
      "commandName": "Project",
      "launchBrowser": true,
      "launchUrl": "index.html",
      "environmentVariables": {
        "ASPNETCORE_ENVIRONMENT": "Development"
      },
      "applicationUrl": "http://localhost:5000"
    }
  }
}

docker-compose.local.yml

version: '3.5'

services:

  customerapi:
    ports:
      - "5000:5000"

构建我的 docker 镜像容器

docker-compose -f docker-compose.yml -f docker-compose.local.yml build

【问题讨论】：

端口：- "5000:5000"
已经在 docker-compose.local.yml 中设置版本：'3.5' services: customerapi: ports: - "5000:5000"
docker-compose -f docker-compose -f docker-compose.local.yml 构建
我只能在你的配置中看到端口 5000
我已经粘贴了启动设置.json，你可以检查一下！！

标签： docker asp.net-core asp.net-web-api docker-compose dockerfile

【解决方案1】：

正确的顺序是这样的

FROM base AS final  

WORKDIR /app  

COPY --from=publish /app .  

EXPOSE 5000/tcp    

ENTRYPOINT ["dotnet", "CustomerAPI.dll"]

【讨论】：

谢谢哥们，它有效，而且非常痛苦，它是如何具有优先顺序的，因为我已经检查了一些 dockerfile 配置设置在 FROM 之后有端口暴露......它不会有任何排序问题，因为 compose 文件确实具有其依赖项。我认为码头工人必须努力。

【解决方案2】：

您必须在 docker-compose 文件中设置以下环境变量，才能监听首选端口。

ENV ASPNETCORE_URLS=http://+:5000

【讨论】：

【解决方案3】：

进程完成多阶段操作后暴露端口

FROM base AS final  

WORKDIR /app  

COPY --from=publish /app .  

ENTRYPOINT ["dotnet", "CustomerAPI.dll"]  

EXPOSE 5000/tcp

【讨论】：

我认为应该是这样 FROM base AS final WORKDIR /app COPY --from=publish /app 。 EXPOSE 5000/tcp ENTRYPOINT ["dotnet", "CustomerAPI.dll"]