docker-golang-notes.md

Docker Golang Notes

Build a Golang app image

Say you have an Echo app

server.go

package main

import (
	"net/http"

	"github.com/labstack/echo"
)

func main() {
	e := echo.New()
	e.GET("/", func(c echo.Context) error {
		return c.String(http.StatusOK, "Hello, from Echo!")
	})
	e.Logger.Fatal(e.Start(":1323"))
}

And you have a Dockerfile:

Dockerfile

FROM golang:1.11.4-alpine
RUN apk update && \
    apk upgrade && \
    apk add --no-cache \
    bash \
    git \
    openssh
WORKDIR /go/src/golang-hello-world
COPY . .
RUN go get -u github.com/labstack/echo/...
RUN go install -v ./...
EXPOSE 1323
CMD ["golang-hello-world"]

You can build the image with:

$ docker image build -t nginx-with-html .

And, you can run the container from the image with:

$ docker run -it --rm -p 80:1323 --name my-running-app golang-hello-world

Add to Docker Hub.

You may need to login first:

$ docker login

Tag the image:

$ docker tag golang-hello-world elliotlarson/golang-hello-world

Push the repository to Docker Hub:

$ docker push elliotlarson/golang-hello-world