Docker REST API Golang - database

Question

Hey guys i'm a new to docker, and i don't understand how to install my Golang application that have a routes, controller, and database config to Docker,after I searched on the internet, all I found was how to run 1 main.go file only, do i need to make route image, controller image, and database image to make my application run on docker?? or just make main.go image in docker to access all ?? sorry for my bad grammar.. i hope you guys understand what i'm talking about appriciate your help
Here my Main.go code
package main
import (
"dikota/config"
"dikota/models"
"dikota/routes"
"fmt"
"github.com/jinzhu/gorm"
)
var err error
func main() {
config.DB, err = gorm.Open("mysql", config.DbURL(config.BuildDBConfig()))
if err != nil {
fmt.Println("Status:", err)
}
//config.DB
defer config.DB.Close()
config.DB.AutoMigrate(&models.Konten{})
config.DB.AutoMigrate(&models.User{})
r := routes.SetupRouter()
//running
r.Run()
}
}
Here my routes code
package routes
import (
"dikota/controllers"
"time"
"github.com/gin-gonic/gin"
cors "github.com/itsjamie/gin-cors"
)
//SetupRouter Function
func SetupRouter() *gin.Engine {
router := gin.Default()
// Apply the middleware to the router (works with groups too)
router.Use(cors.Middleware(cors.Config{
Origins: "*",
Methods: "GET, PUT, POST, DELETE,OPTIONS",
RequestHeaders: "Origin, Authorization, Content-Type",
ExposedHeaders: "",
MaxAge: 50 * time.Second,
Credentials: true,
ValidateHeaders: false,
}))
// grp1 := r.Group("/user-api")
// {
// grp1.GET("user", controllers.GetUsers)
// grp1.POST("user", controllers.CreateUser)
// grp1.GET("user/:id", controllers.GetUserByID)
// grp1.PUT("user/:id", controllers.UpdateUser)
// grp1.DELETE("user/:id", controllers.DeleteUser)
// }
grp1 := router.Group("/konten-api")
{
grp1.GET("konten", controllers.GetKontens)
grp1.POST("createkonten", controllers.CreateKonten)
// grp1.GET("konten/:id", controllers.GetKontenByID)
// grp1.PUT("konten/:id", controllers.UpdateKonten)
// grp1.DELETE("konten/:id", controllers.DeleteKonten)
}
return router
}
Here my database config code
package config
import (
"fmt"
"github.com/jinzhu/gorm"
)
//DB variable
var DB *gorm.DB
//DBConfig struct
type DBConfig struct {
Host string
Port int
User string
DBName string
Password string
}
//BuildDBConfig function
func BuildDBConfig() *DBConfig {
dbConfig := DBConfig{
Host: "localhost",
Port: 3306,
User: "root",
Password: "dikota123",
DBName: "DIKOTA",
}
return &dbConfig
}
//DbURL function
func DbURL(dbConfig *DBConfig) string {
return fmt.Sprintf(
"%s:%s#tcp(%s:%d)/%s?charset=utf8&parseTime=True&loc=Local",
dbConfig.User,
dbConfig.Password,
dbConfig.Host,
dbConfig.Port,
dbConfig.DBName,
)
}