Golang	Framework	OS	Docker for Desktop
1.20.6	Fiber	Windows11 Pro	4.21.1

Installation

go mod init go-shopsite

go get package main

go get github.com/gofiber/fiber/v2

Hello, World!

go run main.go

Dockerコンテナの起動

docker-compose up -d

データベースの作成

Dockerのコンテナ初期構築時に以下のエラーが出た場合は、MySQLのコンテナに入って次のコマンドを実行する。（原因解消は後ほど。）

CREATE DATABASE shop_site;

go-backend-backend-1  | panic: Cloud not connect with the database!
go-backend-backend-1  |
go-backend-backend-1  | goroutine 1 [running]:
go-backend-backend-1  | main.main()
go-backend-backend-1  |     /app/main.go:13 +0x178
go-backend-backend-1  | exit status 2
go-backend-backend-1  |
go-backend-backend-1  | YYYY/mm/dd ~ /app/main.go:10
go-backend-backend-1  | [error] failed to initialize database, got error dial tcp 172.23.0.2:3306: connect: connection refused
go-backend-backend-1  | panic: Cloud not connect with the database!
go-backend-backend-1  |