diff --git a/Makefile b/Makefile
index 05f32a9..00e9694 100644
--- a/Makefile
+++ b/Makefile
@@ -256,7 +256,8 @@ version:
 
 pkg: version ## Create some distribution packages
 	rm -rf builds && mkdir build:
-	scripts/pkg.sh
+	docker-compose build
+	docker-compose run --rm -v $(shell pwd)/:/stns
 
 changelog:
 	git-chglog -o CHANGELOG.md
diff --git a/dockerfiles/Dockerfile.centos-7 b/dockerfiles/Dockerfile.centos-7
index cc0529f..cc3aed4 100644
--- a/dockerfiles/Dockerfile.centos-7
+++ b/dockerfiles/Dockerfile.centos-7
@@ -1,6 +1,9 @@
 FROM centos:7
 MAINTAINER pyama86 <www.kazu.com@gmail.com>
-RUN yum install  -y  glibc \
+RUN sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-* && \
+    sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-* && \
+    yum -y update && yum clean all && \
+    yum install  -y  glibc \
       gcc \
       make \
       bzip2 \
diff --git a/dockerfiles/Dockerfile.debian-10 b/dockerfiles/Dockerfile.debian-10
deleted file mode 100644
index 7d4718e..0000000
--- a/dockerfiles/Dockerfile.debian-10
+++ /dev/null
@@ -1,20 +0,0 @@
-FROM debian:buster
-MAINTAINER pyama86 <www.kazu.com@gmail.com>
-
-RUN ln -sf /usr/share/zoneinfo/Asia/Tokyo /etc/localtime
-RUN apt-get -qqy update && \
-    apt-get install -qqy glibc-source \
-      gcc \
-      make \
-      bzip2 \
-      unzip \
-      debhelper \
-      dh-make \
-      devscripts \
-      cdbs \
-      clang \
-      git
-
-ENV USER root
-RUN mkdir /stns
-WORKDIR /stns
diff --git a/scripts/pkg.sh b/scripts/pkg.sh
deleted file mode 100755
index e80ac6b..0000000
--- a/scripts/pkg.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-pids=()
-SUPPORTOS="centos7 almalinux9 ubuntu20 ubuntu22 ubuntu24 debian10 debian11 debian12"
-rm -rf builds && mkdir builds
-for i in $SUPPORTOS; do
-  {
-    docker-compose build nss_$i && docker-compose run --rm -v "$(pwd)":/stns nss_$i
-  } 2>&1 | tee builds/$i.log &
-
-  pids+=($!)
-done
-
-for pid in ${pids[@]}; do
-  wait $pid
-  if [ $? -ne 0 ]; then
-    exit 1
-  fi
-done
-rm -f  builds/*log