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Dockerfile 包去

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Feb 05, 2024 pm 11:36 PM

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Dockerfile 包去

问题内容

我有一个用go和gin编写的应用程序，这个文件划分如下：

main.go 
    controller 
        controllers.go 
    database    
        database.go 
    middleware 
        middleware.go 
    models 
        models.go 
    routes 
        routes.go 
go.mod 
go.sum 
dockerfile

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在每个文件夹中，我都有一个调用另一个包的包，例如：

package controller

import (
    "log"
    "net/http"
    "os"

    gomail "gopkg.in/mail.v2"

    "github.com/dgrijalva/jwt-go"
    "github.com/gin-gonic/gin"
    models "github.com/guilherm5/login-user/models"
)

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package routes

import (
    "github.com/gin-gonic/gin"
    controller "github.com/guilherm5/login-user/controller"
    middleware "github.com/guilherm5/login-user/middleware"
)

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我的 go.mod 是这样的：

module github.com/guilherm5/login-user



go 1.20

require (
    github.com/dgrijalva/jwt-go v3.2.0+incompatible
    github.com/gin-gonic/gin v1.9.0
    github.com/golang-jwt/jwt v3.2.2+incompatible
    github.com/joho/godotenv v1.5.1
    github.com/lib/pq v1.10.9
    golang.org/x/crypto v0.9.0
    gopkg.in/mail.v2 v2.3.1
)

require (
    github.com/bytedance/sonic v1.8.0 // indirect
    github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
    github.com/gin-contrib/sse v0.1.0 // indirect
    github.com/go-playground/locales v0.14.1 // indirect
    github.com/go-playground/universal-translator v0.18.1 // indirect
    github.com/go-playground/validator/v10 v10.11.2 // indirect
    github.com/goccy/go-json v0.10.0 // indirect
    github.com/json-iterator/go v1.1.12 // indirect
    github.com/klauspost/cpuid/v2 v2.0.9 // indirect
    github.com/leodido/go-urn v1.2.1 // indirect
    github.com/mattn/go-isatty v0.0.17 // indirect
    github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
    github.com/modern-go/reflect2 v1.0.2 // indirect
    github.com/pelletier/go-toml/v2 v2.0.6 // indirect
    github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
    github.com/ugorji/go/codec v1.2.9 // indirect
    golang.org/x/arch v0.0.0-20210923205945-b76863e36670 // indirect
    golang.org/x/net v0.10.0 // indirect
    golang.org/x/sys v0.8.0 // indirect
    golang.org/x/text v0.9.0 // indirect
    google.golang.org/protobuf v1.28.1 // indirect
    gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
    gopkg.in/yaml.v3 v3.0.1 // indirect
)

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所以它遵循我的应用程序流程..

我想制作这个应用程序的 docker 镜像（出于学习目的，我想学习 docker 的基础知识，所以我制作了这个 api 进行测试）

docker 镜像：

from golang:1.20 as build 

workdir /mail 

copy go.sum ./
copy go.mod ./
copy main.go ./


run go mod download
run go build -o /appmail

from gcr.io/distroless/base-debian10

workdir /

copy --from=build /mail /mail

expose 4000/

user nonroot:nonroot 

entrypoint ["/appmail"]

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尝试构建图像时出现错误：

=> error [build 7/7] run go build -o /appmail             0.7s 
------
 > [build 7/7] run go build -o /appmail:
#13 0.680 main.go:5:2: no required module provides package github.com/guilherm5/login-user/routes; to add it:
#13 0.680       go get github.com/guilherm5/login-user/routes   
------
executor failed running [/bin/sh -c go build -o /appmail]: exit code: 1

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有谁知道为什么吗？我真的不知道该怎么解决这个问题，如何将我的包导入到 docker 镜像中？

--编辑

我按照建议更新了我的 dockerfile：

from golang:1.20 as build 

workdir /mail 

copy go.sum ./
copy go.mod ./
copy main.go ./

run go mod tidy
run go mod download
run go build -o /appmail

from gcr.io/distroless/base-debian10

workdir /

copy --from=build /mail /mail

expose 4000/

user nonroot:nonroot 

entrypoint ["/appmail"]

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错误：

github.com/guilherm5/login-user imports
#12 9.121       github.com/guilherm5/login-user/routes: cannot find module providing package github.com/guilherm5/login-user/routes: module github.com/guilherm5/login-user/routes: git ls-remote -q origin in /go/pkg/mod/cache/vcs/a7be81f5c5695c6941aa1b7f5a49aa0800b2d648c4d72609eb5feae6f51cf505: exit status 128:
#12 9.121       fatal: could not read Username for 'https://github.com': terminal prompts disabled
#12 9.121 Confirm the import path was entered correctly.        
#12 9.121 If this is a private repository, see https://golang.org/doc/faq#git_https for additional information.
------
executor failed running [/bin/sh -c go mod tidy]: exit code: 1

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正确答案

问题发生在 copy main.go ./ this 上。

golang 将如何查看依赖项/包？

模块缓存：检查modcache中是否存在软件包$gopath/pkg/mod
项目目录：如果在 modcache 中找不到该包，那么它将检查该包是否相对于我们的项目模块根目录存在。（github.com/guilherm5/login-user/models - 检查名为 models 的目录是否存在。）
远程：如果在模块缓存或项目根目录中找不到包，则从远程存储库中获取它。

在您的情况下，您的项目模块根目录中已经有包（目录），但仅将 main.go 复制到容器系统。因此，当 go mod tidy 运行时，它无法在缓存或根目录中看到包。然后它尝试从远程拉取它。

我在远程仓库中有代码，那么为什么它没有拉动？因为存储库是私有的。

解决方案

将所有文件和文件夹复制到容器系统