My tech stack is.

• Gofiber

• GORM

• Viper

• etc
  i think this is not very important.

When i run and build in my local computer its fine. Just fine noting failed. But when i want to deploy it in railways it is failed. When i look for where is the problem these are the controller is not found.

Maybe the problem is when database initialize. So, to cover switching database i use viper. if the environment is testing then i will use environment variables. if not, it will use config.yaml

i'm using viper to configure the env. here is the code:
if config.ENV == "TESTING" || config.ENV == "PRODUCTION" {
viper.SetConfigFile("ENV")
err := viper.ReadInConfig()
if err != nil {
return Config{}
}
viper.AutomaticEnv()

    err = viper.Unmarshal(&config)
    if err != nil {
        panic(err)
    }
}

The Log are this :

13 [stage-0 7/8] COPY . /app/.

13 DONE 0.0s

14 [stage-0 8/8] RUN --mount=type=cache,id=s/d9a579ee-aa00-4a60-819a-25c189aa8422-/root/cache/go-build,target=/root/.cache/go-build go build -o out

14 0.662 # MyGram/route

14 0.662 route/route.go:60:38: undefined: controller.NewSocialMediaController

#14 ERROR: process "/bin/bash -ol pipefail -c go build -o out" did not complete successfully: exit code: 1

[stage-0 8/8] RUN --mount=type=cache,id=s/d9a579ee-aa00-4a60-819a-25c189aa8422-/root/cache/go-build,target=/root/.cache/go-build go build -o out:
0.662 # MyGram/route

0.662 route/route.go:60:38: undefined: controller.NewSocialMediaController