diff --git a/README.md b/README.md
index 20fd198..a4b8cca 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,18 @@
 
 > Version v1.0.0
 
+## env Table
+| name | value                                                                 |
+| ---  |-----------------------------------------------------------------------|
+| DB_HOST | database host (mysql/mariadb)                                         |
+| DB_PORT | database port (3306)                                                  |
+| DB_NAME | database name                                                         |
+| DB_USER | database connect user                                                 |
+| DB_PASSWORD | database connect password                                             |
+| PDNS_API_KEY | PowerDNS Auth API Key                                                 |
+| PDNS_API_URL | PowerDNS HTTP API URL (contain host, port ex: http://pdns:8081)       |
+| PDNS_NS | Nameserver addresses with comma splitted. (ns1.sh0rt.kr,ns2.sh0rt.kr) |
+
 ## Path Table
 
 | Method | Path | Description |
diff --git a/docker_build.sh b/docker_build.sh
deleted file mode 100755
index e65f1b9..0000000
--- a/docker_build.sh
+++ /dev/null
@@ -1,7 +0,0 @@
-#!/bin/bash
-
-# 현재 날짜와 시간을 YYMMDD(AM/PM)HHMM 형식으로 설정
-current_time=$(date +'%y%m%d%p%H%M')
-
-# Docker 이미지 빌드 명령 실행
-docker build --no-cache -t dalbodeule/dnsapi:$current_time -t dalbodeule/dnsapi:latest .
\ No newline at end of file