What is the easiest way to write Go Dockerfile
This article mainly introduces "what is the simplest Go Dockerfile writing method". In daily operation, I believe many people have doubts about what the simplest Go Dockerfile writing method is. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the questions of "what is the simplest Go Dockerfile writing method?" Next, please follow the editor to study!
1. Some extra points for Dockerfile
Choose the simplest mirror
For example, alpine, the whole image is about 5m.
Set the mirror time zone
RUN apk add-no-cache tzdata
ENV TZ Asia/Shanghai
two。 Multi-stage construction
The first phase builds the executable file to ensure that the build process is independent of the host
In the second stage, the output of the first stage is used as input to construct the final minimalist image.
3. Complete Dockerfile writing process
Install the goctl tool first
GO111MODULE=on GOPROXY= https://goproxy.cn/,direct go get-u github.com/tal-tech/go-zero/tools/goctl
Create a hello service under the greet project
Goctl api new hello
The file structure is as follows:
Greet
├── go.mod
├── go.sum
└── service
└── hello
├── etc
│ └── hello-api.yaml
├── hello.api
├── hello.go
└── internal
├── config
│ └── config.go
├── handler
│ ├── hellohandler.go
│ └── routes.go
├── logic
│ └── hellologic.go
├── svc
│ └── servicecontext.go
└── types
└── types.go
Generate Dockerfile in the hello directory with one click, as follows
Goctl docker-go greet.go
The Dockerfile content is as follows:
FROM golang:alpine AS builder
LABEL stage=gobuilder
ENV CGO_ENABLED 0
ENV GOOS linux
ENV GOPROXY https://goproxy.cn,direct
WORKDIR / build/zero
ADD go.mod.
ADD go.sum.
RUN go mod download
COPY. .
COPY service/hello/etc / app/etc
RUN go build-ldflags= "- s-w"-o / app/hello service/hello/hello.go
FROM alpine
RUN apk update-no-cache & & apk add-no-cache ca-certificates tzdata
ENV TZ Asia/Shanghai
WORKDIR / app
COPY-- from=builder / app/hello / app/hello
COPY-- from=builder / app/etc / app/etc
CMD [". / hello", "- f", "etc/hello-api.yaml"]
Build image in greet directory
Docker build-t hello:v1-f service/hello/Dockerfile.
View Mirror
Hello v1 5455f2eaea6b 7 minutes ago 18.1MB
You can see that the size of the image is about 18m.
Start the service
Docker run-- rm-it-p 8888 it 8888 hello:v1
Test service
$curl-I http://localhost:8888/from/you
HTTP/1.1 200 OK
Content-Type: application/json
Date: Thu, 10 Dec 2020 06:03:02 GMT
Content-Length: 14
{"message": ""}
At this point, the study on "what is the simplest way to write Go Dockerfile" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!
