如何解决"一国两制"问题,；未定义：math.Round“；使用docker安装go应用程序时

我制作了golang api的代码，并在其中导入了一些包，如

math

。但是，当运行sudocker build-t users/micro.构建映像时，一步就会出现错误

错误

Dockerfile

# Start from a Debian image with the latest version of Go installed
# and a workspace (GOPATH) configured at /go.
FROM golang:1.9.6


WORKDIR /go/src/bkapiv/users

# Copy the local package files to the container's workspace.
ADD . /go/src/bkapiv/users

# Build the outyet command inside the container.
# (You may fetch or manage dependencies here,
# either manually or with a tool like "godep".)
RUN cd /go/src
RUN go-wrapper download   # "go get -d -v ./..."
RUN go install

# Run the outyet command by default when the container starts.
ENTRYPOINT /go/bin/users

# Document that the service listens on port 8080.
EXPOSE 8080

进口包装是

package utils

import (
 "bytes"
 "fmt"
 "math"
 "math/rand"
 "os/exec"
 "reflect"
 "sort"
 "strconv"
 "time"
)

 187 func Round(x, unit float64) float64 {
 188        // for this line it will giving me the error 
 189    return math.Round(x/unit) * unit
 190 }

如何解决我的错误

来自

math

软件包的函数

Round（）

仅在Go 1.10（）中引入。您的Dockerfile使用较旧的1.9.6版本，因此您必须升级

package utils

import (
 "bytes"
 "fmt"
 "math"
 "math/rand"
 "os/exec"
 "reflect"
 "sort"
 "strconv"
 "time"
)

 187 func Round(x, unit float64) float64 {
 188        // for this line it will giving me the error 
 189    return math.Round(x/unit) * unit
 190 }