调用“go get”时缺少 Git 命令答案

【问题标题】：Missing Git command when calling `go get`调用“go get”时缺少 Git 命令
【发布时间】：2019-05-11 01:40:42
【问题描述】：

我的 Dockerfile

FROM golang:1.10.2-alpine3.7 AS build
RUN apk --no-cache add gcc g++ make ca-certificates
RUN apk add git
WORKDIR /go/src/github.com/meower

COPY Gopkg.lock Gopkg.toml ./
COPY util util
COPY event event
COPY db db
COPY search search
COPY schema schema
COPY meow-service meow-service
COPY query-service query-service
COPY pusher-service pusher-service

RUN go get -d -v ./...
RUN go install ./...

FROM alpine:3.7
WORKDIR /usr/bin
COPY --from=build /go/bin .

我添加了 apk add git 行。没有此行，我的 docker-compose up 生成了

Step 13/17 : RUN go get -d -v ./...
 ---> Running in d917adba00cd
github.com/lib/pq (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/lib/pq: exec: "git": executable file not found in $PATH
github.com/nats-io/go-nats (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/nats-io/go-nats: exec: "git": executable file not found in $PATH
github.com/gorilla/mux (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/gorilla/mux: exec: "git": executable file not found in $PATH
github.com/kelseyhightower/envconfig (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/kelseyhightower/envconfig: exec: "git": executable file not found in $PATH
package github.com/retry: invalid github.com/ import path "github.com/retry"
github.com/segmentio/ksuid (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/segmentio/ksuid: exec: "git": executable file not found in $PATH
github.com/gorilla/websocket (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/gorilla/websocket: exec: "git": executable file not found in $PATH
github.com/olivere/elastic (download)
go: missing Git command. See https://golang.org/s/gogetcmd
package github.com/olivere/elastic: exec: "git": executable file not found in $PATH

使用git line，其他问题依旧存在

docker-compose up
Building pusher
Step 1/18 : FROM golang:1.10.2-alpine3.7 AS build
 ---> 44ccce322b34
Step 2/18 : RUN apk --no-cache add gcc g++ make ca-certificates
 ---> Using cache
 ---> 088fa5ba19a9
Step 3/18 : RUN apk add git
 ---> Running in 01022f57861b
WARNING: Ignoring APKINDEX.70c88391.tar.gz: No such file or directory
WARNING: Ignoring APKINDEX.5022a8a2.tar.gz: No such file or directory
ERROR: unsatisfiable constraints:
  git (missing):

这是什么意思？

【问题讨论】：

标签： go package

【解决方案1】：

go get 在内部调用特定 VCS 的“参考”客户端工具，该 VCS 用于托管要获取的包。换句话说，go get 本身并不知道如何与 VCS 服务器交互。

所以是的，为了go get 一个由 Git 托管的包，您需要提供可调用的 git 二进制文件的工作 Git 安装。

至于你的第二个问题，它是does not appear to have anything related to Go，所以我建议你做一些研究，然后再问一个标记为alpine 的单独问题，如果失败了。

【讨论】：