Switch to modernc.org/sqlite and update dockerfile

backend/internal/database/user_sqlite.go

@@ -8,7 +8,8 @@ import (
 	"quay/app/repository"
 
 	"github.com/google/uuid"
-	"github.com/mattn/go-sqlite3"
+	"modernc.org/sqlite"
+	sqlite3 "modernc.org/sqlite/lib"
 )
 
 type SQLiteUserRepository struct {
@@ -149,10 +150,9 @@ func (r *SQLiteUserRepository) AdminUserExists() (bool, error) {
 }
 
 func isSQLiteUniqueConstraintError(err error) bool {
-	var sqliteErr sqlite3.Error
+	var sqliteErr *sqlite.Error
 	if !errors.As(err, &sqliteErr) {
 		return false
 	}
-
-	return sqliteErr.Code == sqlite3.ErrConstraint && sqliteErr.ExtendedCode == sqlite3.ErrConstraintUnique
+	return sqliteErr.Code() == sqlite3.SQLITE_CONSTRAINT_UNIQUE
 }