Go製のフレームワークechoをHerokuで動かす ref: http://qiita.com/qube81/items/b89ec5e663be934dccf5

file0.txt

go get github.com/labstack/echo/...

file2.txt

cd $GOPATH/src/echoproject
export PORT=8080
go run main.go
# http://localhost:8080 に "Hello, World!"と表示されていればOK

file3.txt

# godepの取得
go get github.com/kr/godep
# 私の環境では以下も必要でした
go get golang.org/x/sys/unix
# 依存関係を保存します
godep save

file4.txt

echo "web: $(basename `pwd`)" > Procfile

file5.txt

$GOPATH/src/echoproject
├── Godeps
│   ├── Godeps.json
│   └── Readme
├── Procfile
├── main.go
└── vendor
    ├── github.com
    │   ├── dgrijalva
    │   │   └── jwt-go
    │   ├── labstack
    │   │   ├── echo
    │   │   └── gommon
    │   ├── mattn
    │   │   ├── go-colorable
    │   │   └── go-isatty
    │   └── valyala
    │       └── fasttemplate
    └── golang.org
        └── x
            ├── net
            └── sys

file6.txt

git init
git add .
git commit -m "initial commit"

file7.txt

# heroku側にアプリを作ります
heroku create
git push heroku master
# ブラウザで開きます
heroku open

file8.txt

heroku logs --tail

> 2016-07-03T02:36:24.386962+00:00 heroku[slug-compiler]: Slug compilation started
> 2016-07-03T02:36:24.386967+00:00 heroku[slug-compiler]: Slug compilation finished
> 2016-07-03T02:36:24.858458+00:00 heroku[web.1]: Starting process with command `echoproject`
> 2016-07-03T02:36:28.518721+00:00 heroku[web.1]: State changed from starting to up

main.go

package main

import (
    "net/http"
    "os"

    "github.com/labstack/echo"
    "github.com/labstack/echo/engine/standard"
    "github.com/labstack/echo/middleware"
)

func main() {
    // Echo instance
    e := echo.New()

    // Middleware
    e.Use(middleware.Logger())
    e.Use(middleware.Recover())

    // Route => handler
    e.GET("/", func(c echo.Context) error {
        return c.String(http.StatusOK, "Hello, World!\n")
    })

    // Start server
    // ポート番号は環境変数から取得
    e.Run(standard.New(":" + os.Getenv("PORT")))
}