仓库自包含化：Docker/CI/文档/规范入库，路由分组拆分

internal/database/database.go

@@ -4,29 +4,56 @@ import (
 	"fmt"
 
 	"github.com/glebarez/sqlite"
+	"gorm.io/driver/mysql"
+	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 	"gorm.io/gorm/logger"
 
 	"oci-portal/internal/model"
 )
 
-// Open 打开 SQLite 数据库并自动迁移全部模型。
-func Open(path string) (*gorm.DB, error) {
-	db, err := gorm.Open(sqlite.Open(path), &gorm.Config{
+// Open 按驱动打开数据库并自动迁移全部模型。
+// driver 取值 sqlite(默认)/mysql/postgres;sqlite 用 path,其余用 dsn。
+func Open(driver, dsn, path string) (*gorm.DB, error) {
+	dialector, err := buildDialector(driver, dsn, path)
+	if err != nil {
+		return nil, err
+	}
+	db, err := gorm.Open(dialector, &gorm.Config{
 		Logger: logger.Default.LogMode(logger.Warn),
 	})
 	if err != nil {
-		return nil, fmt.Errorf("open sqlite %s: %w", path, err)
+		return nil, fmt.Errorf("open %s database: %w", dialector.Name(), err)
 	}
-	if err := db.AutoMigrate(
+	if err := autoMigrate(db); err != nil {
+		return nil, fmt.Errorf("auto migrate: %w", err)
+	}
+	return db, nil
+}
+
+// buildDialector 把驱动名映射为 GORM dialector;三个驱动均为纯 Go,不引入 cgo。
+// MySQL 设 DefaultStringSize=512:未标 size 的 string 建为 varchar(512),
+// 避免 OCID / URL 类字段被默认 varchar(191) 截断(SQLite/PG 的 string 天然无长度上限)。
+func buildDialector(driver, dsn, path string) (gorm.Dialector, error) {
+	switch driver {
+	case "", "sqlite":
+		return sqlite.Open(path), nil
+	case "mysql":
+		return mysql.New(mysql.Config{DSN: dsn, DefaultStringSize: 512}), nil
+	case "postgres":
+		return postgres.Open(dsn), nil
+	default:
+		return nil, fmt.Errorf("unsupported DB_DRIVER %q (sqlite/mysql/postgres)", driver)
+	}
+}
+
+func autoMigrate(db *gorm.DB) error {
+	return db.AutoMigrate(
 		&model.User{}, &model.UserIdentity{}, &model.OciConfig{}, &model.Task{}, &model.TaskLog{},
 		&model.CheckSnapshot{}, &model.CostSnapshot{},
 		&model.RegionCache{}, &model.CompartmentCache{}, &model.Setting{},
 		&model.SystemLog{}, &model.LogEvent{}, &model.Proxy{},
 		&model.AiKey{}, &model.AiChannel{}, &model.AiModelCache{}, &model.AiCallLog{},
 		&model.AiContentLog{},
-	); err != nil {
-		return nil, fmt.Errorf("auto migrate: %w", err)
-	}
-	return db, nil
+	)
 }