feat: add postgres repository for training

internal/bootstrap/logger.go

@@ -0,0 +1,23 @@
+package bootstrap
+
+import (
+	"go.uber.org/zap"
+	"os"
+)
+
+func Logger() *zap.Logger {
+	if os.Getenv("APP_ENV") == "development" {
+		logger, err := zap.NewDevelopment()
+		if err != nil {
+			return zap.NewNop()
+		}
+		return logger
+	}
+
+	logger, err := zap.NewProduction()
+	if err != nil {
+		return zap.NewNop()
+	}
+
+	return logger
+}