add connect

cmd/${REPO_NAME_SNAKE}/main.go

@@ -1,18 +1,35 @@
 package main
 
 import (
-	"${REPO_NAME_SNAKE}/internal/app"
-	proto "${REPO_NAME_SNAKE}/proto"
 	"context"
-	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/credentials/insecure"
 	"log"
 	"net"
 	"net/http"
+	"os"
+	"${REPO_NAME_SNAKE}/internal/app"
+	proto "${REPO_NAME_SNAKE}/proto"
+	
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"github.com/jackc/pgx/v5/pgxpool"
+	"github.com/joho/godotenv"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 )
 
 func main() {
+	_ = godotenv.Load()
+
+	dbpool, err := pgxpool.New(context.Background(), os.Getenv("DATABASE_URL"))
+	if err != nil {
+		log.Fatalf("Unable to create connection pool: %v\n", err)
+	}
+	defer dbpool.Close()
+
+	var greeting string
+	if err = dbpool.QueryRow(context.Background(), "select 'Hello, world!'").Scan(&greeting); err != nil {
+		log.Fatalf("QueryRow failed: %v\n", err)
+	}
+
 	// Create a listener on TCP port
 	lis, err := net.Listen("tcp", ":8080")
 	if err != nil {