func getOSPrefixEnv(s string) string {
	if e := strings.TrimSpace(os.Getenv(envPrefix + s)); len(e) > 0 {
		return e
	}
	return ""
}
getOSPrefixEnv get os env
package db
import (
	"os"
	"strings"
	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/credentials"
	"github.com/aws/aws-sdk-go/aws/session"
	"github.com/aws/aws-sdk-go/service/dynamodb"
	"github.com/axelspringer/swerve/src/log"
)
var (
	dbDomainTableName = getOSPrefixEnv("DOMAINS")
	dbCacheTableName  = getOSPrefixEnv("DOMAINS_TLS_CACHE")
	dbUsersTable      = getOSPrefixEnv("USERS")
)
var (
	DBTablePrefix = ""
)
const (
	envPrefix = "SWERVE_"
)