diff --git a/Dockerfile b/Dockerfile
index a43c096..08d798a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@
 FROM debian:buster-slim
 
 # APT源配置：default / tencent / ustc / aliyun / huawei
-ARG apt_source=tencent
+ARG apt_source=aliyun
 
 ENV APP_NAME=dbuilder \
 	APP_USER=builder
@@ -39,8 +39,8 @@ RUN select_source ${apt_source}
 #  patch perl perl-modules-5.28 pinentry-curses pkg-config procps python3
 #  python3-minimal python3.7 python3.7-minimal readline-common sudo wget
 #  xz-utils
-RUN install_pkg sudo wget curl git ca-certificates iproute2 net-tools nano \
-		dpkg gnupg dirmngr apt-utils apt-transport-https lsb-release iputils-ping \
+RUN install_pkg sudo wget curl git ca-certificates iproute2 net-tools nano dpkg gnupg \
+		dirmngr apt-utils apt-transport-https lsb-release iputils-ping \
 		build-essential cmake libcmocka-dev pkg-config libssl-dev
 
 RUN prepare_env && create_user
diff --git a/Makefile b/Makefile
index 4040488..e7c8b04 100644
--- a/Makefile
+++ b/Makefile
@@ -17,7 +17,7 @@ current_tag:=$(shell if [ ! `git status >/dev/null 2>&1` ]; then git rev-parse -
 build-arg:=--build-arg apt_source=aliyun
 
 # 设置本地下载服务器路径，加速调试时的本地编译速度
-local_ip:=`ifconfig -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $$2}'|tr -d "addr:"`
+local_ip:=`echo "en0 eth0" |xargs -n1 ip addr show 2>/dev/null|grep inet|grep -v 127.0.0.1|grep -v inet6|tr "/" " "|awk '{print $$2}'`
 build-arg+=--build-arg local_url=http://$(local_ip)/dist-files
 
 .PHONY: build clean clearclean upgrade tag push
@@ -32,7 +32,6 @@ build:
 	@echo "Add tag: $(alpine_name):latest"
 	@docker tag "$(alpine_name):$(current_tag)" $(alpine_name):latest
 
-# 清理悬空的镜像（无TAG）及停止的容器 
 # 清理悬空的镜像（无TAG）及停止的容器 
 clearclean: clean
 	@echo "Clean untaged images and stoped containers..."
@@ -65,3 +64,4 @@ push: tag
 upgrade: 
 	@echo "Upgrade all images..."
 	@docker images | grep 'colovu' | grep -v '<none>' | grep -v "latest-" | awk '{print $$1":"$$2}' | sort -u | xargs -L 1 docker pull
+
diff --git a/README.md b/README.md
index 8f9d1bc..3fe3ccc 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@
 其中：
 
 - dbuilder：基于 Debian 系统的 Builder 环境
-- abuilder：基于 Alpine 系统的 Builder环境
+- abuilder：基于 Alpine 系统的 Builder 环境
 
 **版本信息：**
 
@@ -16,8 +16,9 @@
 **镜像信息：**
 
 * 镜像地址：
-  * colovu/dbuilder:latest
-  * colovu/abuilder:latest
+  * registry.cn-shenzhen.aliyuncs.com/colovu/dbuilder:latest
+  * registry.cn-shenzhen.aliyuncs.com/colovu/abuilder:latest
+
 
 ## 数据卷
 
@@ -25,7 +26,7 @@
 
 ```shell
  /srv/data			# 工作目录
- /srv/conf		# 配置文件目录
+ /srv/conf		    # 配置文件目录
 ```
 
 ## 用户
@@ -39,8 +40,8 @@
 使用`--from=0`方式：
 
 ```dockerfile
-# 预编译阶段
-FROM colovu/abuilder
+# 预编译阶段 ===============================
+FROM registry.cn-shenzhen.aliyuncs.com/colovu/abuilder
 
 WORKDIR /build
 RUN \
@@ -49,7 +50,9 @@ RUN \
 	wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/${gosu_ver}/gosu-$dpkgArch"; \
 	chmod +x /usr/local/bin/gosu;
 
-# 镜像生成阶段
+# ... 省略
+
+# 镜像生成阶段 ==============================
 FROM scratch
 # 从编译阶段的中拷贝编译结果到当前镜像中
 COPY --from=0 /usr/local/bin/gosu /usr/local/bin/
@@ -59,12 +62,19 @@ CMD []
 使用`--from=name`方式：
 
 ```dockerfile
-# 预编译阶段。命名为`builder`
-FROM colovu/abuilder as builder
+# 预编译阶段。命名为`builder` ==================
+FROM registry.cn-shenzhen.aliyuncs.com/colovu/abuilder as builder
+
+WORKDIR /build
+RUN \
+    dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
+    gosu_ver=1.12; \
+    wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/${gosu_ver}/gosu-$dpkgArch"; \
+    chmod +x /usr/local/bin/gosu;
 
 # ... 省略
 
-# 镜像生成阶段
+# 镜像生成阶段 ==============================
 FROM scratch
 # 从编译阶段的中拷贝编译结果到当前镜像中
 COPY --from=builder /usr/local/bin/gosu /usr/local/bin/
@@ -74,8 +84,7 @@ CMD []
 使用该方式的优势：
 
 - 因系统相关软件包已更新，工具已经预先安装，不需要在每次编译镜像时耗费大量时间在类似重复工作上
-
-- 不用安装、删除临时软件，方式生成多余的垃圾文件；预编译阶段的内容使用完即丢弃，不会对镜像大小产生影响
+- 不用安装、删除临时软件，放置生成多余的垃圾文件；预编译阶段的内容使用完即丢弃，不会对镜像大小产生影响
 
 
 
diff --git a/alpine/Dockerfile b/alpine/Dockerfile
index e4ff1fc..6efa87f 100644
--- a/alpine/Dockerfile
+++ b/alpine/Dockerfile
@@ -1,28 +1,29 @@
-# Ver: 1.0 by Endial Fang (endial@126.com)
+# Ver: 1.2 by Endial Fang (endial@126.com)
 #
 FROM alpine:3.12
 
-# 说明：
-#	虽然原始镜像包含 wget, 但该版本存在问题，下载部分资源（如redis）会报错，因此安装官方完整版
-
 # APK源配置：default / tencent / ustc / aliyun / huawei
-ARG apt_source=tencent
+ARG apt_source=aliyun
 
 ENV APP_NAME=abuilder \
 	APP_USER=builder
 
 LABEL \
     "Version"="v3.12" \
-	"Description"="Docker image for Builder based on Alpine." \
+	"Description"="Docker image for Builder based on Alpine v3.12." \
 	"Dockerfile"="https://github.com/colovu/docker-builder" \
 	"Vendor"="Endial Fang (endial@126.com)"
 
 COPY prebuilds /
 COPY customer /
 RUN select_source ${apt_source}
-RUN install_pkg sudo wget git curl ca-certificates iproute2 net-tools nano \
-		dpkg dpkg-dev gnupg bash build-base cmake pkgconf \
+
+# 说明：
+#	虽然原始镜像包含 wget, 但该版本存在问题，下载部分资源（如redis）会报错，因此安装官方完整版
+RUN install_pkg sudo wget curl git ca-certificates iproute2 net-tools nano dpkg gnupg \
+		dpkg-dev bash build-base cmake pkgconf \
 		linux-headers cmocka-dev openssl-dev
+
 RUN prepare_env && create_user
 
 CMD []
\ No newline at end of file
diff --git a/alpine/prebuilds/usr/local/scripts/libcommon.sh b/alpine/prebuilds/usr/local/scripts/libcommon.sh
index 4b10d1f..2078677 100644
--- a/alpine/prebuilds/usr/local/scripts/libcommon.sh
+++ b/alpine/prebuilds/usr/local/scripts/libcommon.sh
@@ -35,8 +35,8 @@ print_command_help() {
     local arg
     for arg; do
         case "$arg" in
-            -'?'|--help|-V|--version)
-                exec "${APP_EXEC:-/bin/bash}" "${arg}"
+            -'?'|--help|-V|--version|-version)
+                exec "$@"
                 exit
                 ;;
         esac
diff --git a/alpine/prebuilds/usr/local/scripts/liblog.sh b/alpine/prebuilds/usr/local/scripts/liblog.sh
index 2b3e931..62f50da 100644
--- a/alpine/prebuilds/usr/local/scripts/liblog.sh
+++ b/alpine/prebuilds/usr/local/scripts/liblog.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 # Ver: 1.1 by Endial Fang (endial@126.com)
+# 
+# 日志输出函数库
 
 #[[ ${ENV_DEBUG:-false} = true ]] && set -x
 MODULE="$(basename "$0")"
diff --git a/alpine/prebuilds/usr/local/scripts/libnet.sh b/alpine/prebuilds/usr/local/scripts/libnet.sh
new file mode 100644
index 0000000..9853696
--- /dev/null
+++ b/alpine/prebuilds/usr/local/scripts/libnet.sh
@@ -0,0 +1,120 @@
+#!/bin/bash
+# Ver: 1.1 by Endial Fang (endial@126.com)
+#
+# 文件管理函数库
+
+# 加载依赖项
+. /usr/local/scripts/liblog.sh          # 日志输出函数库
+
+# 函数列表
+
+# 域名解析
+# 参数:
+#   $1 - 需要解析的主机名
+dns_lookup() {
+    local host="${1:?host is missing}"
+    getent ahosts "$host" | awk '/STREAM/ {print $1 }'
+}
+
+# 尝试解析域名并返回对应的 IP
+# 参数:
+#   $1 - 主机名
+#   $2 - 尝试次数
+#   $3 - 重试间隔时间（秒）
+wait_for_dns_lookup() {
+    local hostname="${1:?hostname is missing}"
+    local retries="${2:-5}"
+    local seconds="${3:-1}"
+    check_host() {
+        if [[ $(dns_lookup "$hostname") == "" ]]; then
+            false
+        else
+            true
+        fi
+    }
+    # Wait for the host to be ready
+    retry_while "check_host ${hostname}" "$retries" "$seconds"
+    dns_lookup "$hostname"
+}
+
+# 获取当前主机 IP
+get_machine_ip() {
+    local -a ip_addresses
+    local hostname
+    hostname="$(hostname)"
+    read -r -a ip_addresses <<< "$(dns_lookup "$hostname" | xargs echo)"
+    if [[ "${#ip_addresses[@]}" -gt 1 ]]; then
+        LOG_W "Found more than one IP address associated to hostname ${hostname}: ${ip_addresses[*]}, will use ${ip_addresses[0]}"
+    elif [[ "${#ip_addresses[@]}" -lt 1 ]]; then
+        LOG_E "Could not find any IP address associated to hostname ${hostname}"
+        exit 1
+    fi
+    echo "${ip_addresses[0]}"
+}
+
+# Check if the provided argument is a resolved hostname
+# 参数:
+#   $1 - 待检测的主机名
+# 返回值:
+#   布尔值
+is_hostname_resolved() {
+    local -r host="${1:?missing value}"
+    if [[ -n "$(dns_lookup "$host")" ]]; then
+        true
+    else
+        false
+    fi
+}
+
+# 解析 URL
+# 参数:
+#   $1 - URI 字符串  
+#   $2 - 类型字符串. 有效值 (scheme, authority, userinfo, host, port, path, query or fragment)
+# 返回值:
+#   字符串
+parse_uri() {
+    local uri="${1:?uri is missing}"
+    local component="${2:?component is missing}"
+
+    # Solution based on https://tools.ietf.org/html/rfc3986#appendix-B with
+    # additional sub-expressions to split authority into userinfo, host and port
+    # Credits to Patryk Obara (see https://stackoverflow.com/a/45977232/6694969)
+    local -r URI_REGEX='^(([^:/?#]+):)?(//((([^@/?#]+)@)?([^:/?#]+)(:([0-9]+))?))?(/([^?#]*))?(\?([^#]*))?(#(.*))?'
+    #                    ||            |  |||            |         | |            | |         |  |        | |
+    #                    |2 scheme     |  ||6 userinfo   7 host    | 9 port       | 11 rpath  |  13 query | 15 fragment
+    #                    1 scheme:     |  |5 userinfo@             8 :...         10 path     12 ?...     14 #...
+    #                                  |  4 authority
+    #                                  3 //...
+    local index=0
+    case "$component" in
+        scheme)
+            index=2
+            ;;
+        authority)
+            index=4
+            ;;
+        userinfo)
+            index=6
+            ;;
+        host)
+            index=7
+            ;;
+        port)
+            index=9
+            ;;
+        path)
+            index=10
+            ;;
+        query)
+            index=13
+            ;;
+        fragment)
+            index=14
+            ;;
+        *)
+            stderr_print "unrecognized component $component"
+            return 1
+            ;;
+    esac
+    [[ "$uri" =~ $URI_REGEX ]] && echo "${BASH_REMATCH[${index}]}"
+}
diff --git a/alpine/prebuilds/usr/sbin/download_pkg b/alpine/prebuilds/usr/sbin/download_pkg
index c926119..c4ec2e9 100755
--- a/alpine/prebuilds/usr/sbin/download_pkg
+++ b/alpine/prebuilds/usr/sbin/download_pkg
@@ -1,5 +1,5 @@
 #!/bin/bash
-# Ver: 1.0 by Endial Fang (endial@126.com)
+# Ver: 1.1 by Endial Fang (endial@126.com)
 # 
 # shell 执行参数，分别为 -e(命令执行错误则退出脚本) -u(变量未定义则报错) -x(打印实际待执行的命令行)
 set -eux
@@ -141,12 +141,12 @@ fi
 
 # 安装或解压软件
 case "$1" in
-  download)
-    LOG_I "Download success: $CACHE_ROOT/$PACKAGE"
-    ;;
+	download)
+		LOG_I "Download success: $CACHE_ROOT/$PACKAGE"
+		;;
 	install) 
 		LOG_I "Installing $PACKAGE"
-    cp $CACHE_ROOT/$PACKAGE /usr/local/bin/
+		cp $CACHE_ROOT/$PACKAGE /usr/local/bin/
 		;;
 	unpack) 
 		if ! tar -taf $CACHE_ROOT/$PACKAGE >/dev/null 2>&1; then
diff --git a/prebuilds/usr/local/scripts/libcommon.sh b/prebuilds/usr/local/scripts/libcommon.sh
index 4b10d1f..2078677 100644
--- a/prebuilds/usr/local/scripts/libcommon.sh
+++ b/prebuilds/usr/local/scripts/libcommon.sh
@@ -35,8 +35,8 @@ print_command_help() {
     local arg
     for arg; do
         case "$arg" in
-            -'?'|--help|-V|--version)
-                exec "${APP_EXEC:-/bin/bash}" "${arg}"
+            -'?'|--help|-V|--version|-version)
+                exec "$@"
                 exit
                 ;;
         esac
diff --git a/prebuilds/usr/local/scripts/liblog.sh b/prebuilds/usr/local/scripts/liblog.sh
index 2b3e931..62f50da 100644
--- a/prebuilds/usr/local/scripts/liblog.sh
+++ b/prebuilds/usr/local/scripts/liblog.sh
@@ -1,5 +1,7 @@
 #!/bin/bash
 # Ver: 1.1 by Endial Fang (endial@126.com)
+# 
+# 日志输出函数库
 
 #[[ ${ENV_DEBUG:-false} = true ]] && set -x
 MODULE="$(basename "$0")"
diff --git a/prebuilds/usr/local/scripts/libnet.sh b/prebuilds/usr/local/scripts/libnet.sh
new file mode 100644
index 0000000..9853696
--- /dev/null
+++ b/prebuilds/usr/local/scripts/libnet.sh
@@ -0,0 +1,120 @@
+#!/bin/bash
+# Ver: 1.1 by Endial Fang (endial@126.com)
+#
+# 文件管理函数库
+
+# 加载依赖项
+. /usr/local/scripts/liblog.sh          # 日志输出函数库
+
+# 函数列表
+
+# 域名解析
+# 参数:
+#   $1 - 需要解析的主机名
+dns_lookup() {
+    local host="${1:?host is missing}"
+    getent ahosts "$host" | awk '/STREAM/ {print $1 }'
+}
+
+# 尝试解析域名并返回对应的 IP
+# 参数:
+#   $1 - 主机名
+#   $2 - 尝试次数
+#   $3 - 重试间隔时间（秒）
+wait_for_dns_lookup() {
+    local hostname="${1:?hostname is missing}"
+    local retries="${2:-5}"
+    local seconds="${3:-1}"
+    check_host() {
+        if [[ $(dns_lookup "$hostname") == "" ]]; then
+            false
+        else
+            true
+        fi
+    }
+    # Wait for the host to be ready
+    retry_while "check_host ${hostname}" "$retries" "$seconds"
+    dns_lookup "$hostname"
+}
+
+# 获取当前主机 IP
+get_machine_ip() {
+    local -a ip_addresses
+    local hostname
+    hostname="$(hostname)"
+    read -r -a ip_addresses <<< "$(dns_lookup "$hostname" | xargs echo)"
+    if [[ "${#ip_addresses[@]}" -gt 1 ]]; then
+        LOG_W "Found more than one IP address associated to hostname ${hostname}: ${ip_addresses[*]}, will use ${ip_addresses[0]}"
+    elif [[ "${#ip_addresses[@]}" -lt 1 ]]; then
+        LOG_E "Could not find any IP address associated to hostname ${hostname}"
+        exit 1
+    fi
+    echo "${ip_addresses[0]}"
+}
+
+# Check if the provided argument is a resolved hostname
+# 参数:
+#   $1 - 待检测的主机名
+# 返回值:
+#   布尔值
+is_hostname_resolved() {
+    local -r host="${1:?missing value}"
+    if [[ -n "$(dns_lookup "$host")" ]]; then
+        true
+    else
+        false
+    fi
+}
+
+# 解析 URL
+# 参数:
+#   $1 - URI 字符串  
+#   $2 - 类型字符串. 有效值 (scheme, authority, userinfo, host, port, path, query or fragment)
+# 返回值:
+#   字符串
+parse_uri() {
+    local uri="${1:?uri is missing}"
+    local component="${2:?component is missing}"
+
+    # Solution based on https://tools.ietf.org/html/rfc3986#appendix-B with
+    # additional sub-expressions to split authority into userinfo, host and port
+    # Credits to Patryk Obara (see https://stackoverflow.com/a/45977232/6694969)
+    local -r URI_REGEX='^(([^:/?#]+):)?(//((([^@/?#]+)@)?([^:/?#]+)(:([0-9]+))?))?(/([^?#]*))?(\?([^#]*))?(#(.*))?'
+    #                    ||            |  |||            |         | |            | |         |  |        | |
+    #                    |2 scheme     |  ||6 userinfo   7 host    | 9 port       | 11 rpath  |  13 query | 15 fragment
+    #                    1 scheme:     |  |5 userinfo@             8 :...         10 path     12 ?...     14 #...
+    #                                  |  4 authority
+    #                                  3 //...
+    local index=0
+    case "$component" in
+        scheme)
+            index=2
+            ;;
+        authority)
+            index=4
+            ;;
+        userinfo)
+            index=6
+            ;;
+        host)
+            index=7
+            ;;
+        port)
+            index=9
+            ;;
+        path)
+            index=10
+            ;;
+        query)
+            index=13
+            ;;
+        fragment)
+            index=14
+            ;;
+        *)
+            stderr_print "unrecognized component $component"
+            return 1
+            ;;
+    esac
+    [[ "$uri" =~ $URI_REGEX ]] && echo "${BASH_REMATCH[${index}]}"
+}
diff --git a/prebuilds/usr/sbin/download_pkg b/prebuilds/usr/sbin/download_pkg
index 6bd7a96..0958b50 100755
--- a/prebuilds/usr/sbin/download_pkg
+++ b/prebuilds/usr/sbin/download_pkg
@@ -141,9 +141,9 @@ fi
 
 # 安装或解压软件
 case "$1" in
-  download)
-    LOG_I "Download success: $CACHE_ROOT/$PACKAGE"
-    ;;
+	download)
+		LOG_I "Download success: $CACHE_ROOT/$PACKAGE"
+		;;
 	install) 
 		LOG_I "Installing $PACKAGE"
 		cp $CACHE_ROOT/$PACKAGE /usr/local/bin/