Dockerize an existing GOLANG web server

in the golang project folder create a file named Dockerfile and a file named docker-compose.yml

Dockerile

FROM golang:latest
LABEL maintainer "Pierangelo Orizio <[e-mail]>"
# for install go packages RUN go get /path
RUN go get github.com/go-sql-driver/mysql
# Copy the local package files to the container's workspace.
ADD . /go/src/github.com/pierangelo1982/myproject
# build executable
RUN go install github.com/pierangelo1982/myproject
# execute 
ENTRYPOINT /go/bin/myproject
# Document that the service listens on port 8080.
EXPOSE 8080

N.B: in the paths you can substitute pierangelo1982 with your github username.

For add other GO packages add in dockerfile this command (see line 5 in Dockerfile for see an example):

RUN go get github.com/<nameofthepackages>

docker-compose.yml

version: '2'
services:
  app:
    build: .
    volumes:
      - .:/go/src/github.com/pierangelo1982/myproject
    expose:
      - "8080"
    ports:
      - 8080:8080

From the terminal, from inside the project folder launch this commands:

docker-compose build

and

docker-compose up -d

check with the browser if the app run at the address http://0.0.0.0:8080