Gin

설치

• https://github.com/gin-gonic/gin

go get -u github.com/gin-gonic/gin

Config

• https://github.com/caarlos0/env
• https://github.com/joho/godotenv

go get -u github.com/caarlos0/env/v6

go get -u github.com/joho/godotenv

.env

DEBUG=true
PORT=8080
POD_NAME=gin-test
POD_NAMESPACE=localhost

"internal/config/config.go

package config

import (
    "fmt"

    "github.com/caarlos0/env/v6"
    "github.com/joho/godotenv"
)

type config struct {
    Debug bool      `env:"DEBUG" envDefault:"false"`
    Port  int       `env:"PORT" envDefault:"8080"`
    K8s   podConfig `envPrefix:"POD_"`
}

type podConfig struct {
    Name      string `env:"NAME,required"`
    Namespace string `env:"NAMESPACE,required"`
}

var c config

func Init() {
    var err error
    err = godotenv.Load()
    if err != nil {
        fmt.Println("failed to load .env", err)
    }

    err = env.Parse(&c)
    if err != nil {
        fmt.Println("failed to parse env", err)
    }
}

func Config() config {
    return c
}

Dockerfile

.dockerignore

.env

Dockerfile

FROM golang:1.19.2-alpine AS build
WORKDIR /app

COPY . /app
RUN go mod tidy
RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -ldflags '-s' -tags=go_json,nomsgpack -buildvcs=false -o app


FROM alpine:3.16.3 AS runtime
WORKDIR /app

COPY --from=build /app/app /usr/bin/

ENV PORT 8080
EXPOSE 8080
CMD ["app"]

scratch 이미지를 사용하면 작은 이미지를 만들 수 있지만, 디버깅이 어려울 수 있습니다.