diff --git a/_local/.bashrc_docker b/_local/.bashrc_docker
deleted file mode 100644
index ed0df3c..0000000
--- a/_local/.bashrc_docker
+++ /dev/null
@@ -1,49 +0,0 @@
-# Some useful commands to use docker.
-# Author: yeasy@github
-# Created:2014-09-25
-
-alias docker-pid="sudo docker inspect --format '{{.State.Pid}}'"
-alias docker-ip="sudo docker inspect --format '{{ .NetworkSettings.IPAddress }}'"
-
-#the implementation refs from https://github.com/jpetazzo/nsenter/blob/master/docker-enter
-function docker-enter() {
-    #if [ -e $(dirname "$0")/nsenter ]; then
-    #Change for centos bash running
-    if [ -e $(dirname '$0')/nsenter ]; then
-        # with boot2docker, nsenter is not in the PATH but it is in the same folder
-        NSENTER=$(dirname "$0")/nsenter
-    else
-        # if nsenter has already been installed with path notified, here will be clarified
-        NSENTER=$(which nsenter)
-        #NSENTER=nsenter
-    fi
-    [ -z "$NSENTER" ] && echo "WARN Cannot find nsenter" && return
-
-    if [ -z "$1" ]; then
-        echo "Usage: `basename "$0"` CONTAINER [COMMAND [ARG]...]"
-        echo ""
-        echo "Enters the Docker CONTAINER and executes the specified COMMAND."
-        echo "If COMMAND is not specified, runs an interactive shell in CONTAINER."
-    else
-        PID=$(sudo docker inspect --format "{{.State.Pid}}" "$1")
-        if [ -z "$PID" ]; then
-            echo "WARN Cannot find the given container"
-            return
-        fi
-        shift
-
-        OPTS="--target $PID --mount --uts --ipc --net --pid"
-
-        if [ -z "$1" ]; then
-            # No command given.
-            # Use su to clear all host environment variables except for TERM,
-            # initialize the environment variables HOME, SHELL, USER, LOGNAME, PATH,
-            # and start a login shell.
-            #sudo $NSENTER "$OPTS" su - root
-            sudo $NSENTER --target $PID --mount --uts --ipc --net --pid su - root
-        else
-            # Use env to clear all host environment variables.
-            sudo $NSENTER --target $PID --mount --uts --ipc --net --pid env -i $@
-        fi
-    fi
-}
diff --git a/_local/docker_manual_waitfish.pdf b/_local/docker_manual_waitfish.pdf
deleted file mode 100644
index add8577..0000000
Binary files a/_local/docker_manual_waitfish.pdf and /dev/null differ
diff --git a/_local/pull_all.sh b/_local/pull_all.sh
deleted file mode 100644
index 8240c08..0000000
--- a/_local/pull_all.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/sh
-
-# This script will update all local images
-# See: https://github.com/yeasy/docker_practice/blob/master/_local/pull_all.sh
-# Usage:  pull_all
-# Author: yeasy@github
-# Create: 2014-09-23
-
-for image in `sudo docker images|grep -v "REPOSITORY"|grep -v "<none>"|awk '{print $1":"$2}'`
-do
-    sudo docker pull $image
-done
-
diff --git a/_local/push_all.sh b/_local/push_all.sh
deleted file mode 100644
index 2ec1aee..0000000
--- a/_local/push_all.sh
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/sh
-# This script will upload all local images to a registry server ($registry is the default value).
-# This script requires the push_images, which can be found at https://github.com/yeasy/docker_practice/blob/master/_local/push_images.sh
-# Usage:  push_all
-# Author: yeasy@github
-# Create: 2014-09-23
-
-for image in `sudo docker images|grep -v "REPOSITORY"|grep -v "<none>"|awk '{print $1":"$2}'`
-do
-    push_images $image
-done
-
diff --git a/_local/push_images.sh b/_local/push_images.sh
deleted file mode 100644
index 5e7516f..0000000
--- a/_local/push_images.sh
+++ /dev/null
@@ -1,47 +0,0 @@
-#!/bin/sh
-
-# This script will upload the given local images to a registry server ($registry is the default value).
-# See: https://github.com/yeasy/docker_practice/blob/master/_local/push_images.sh
-# Usage:  push_images image1 [image2...]
-# Author: yeasy@github
-# Create: 2014-09-23
-
-#The registry server address where you want push the images into
-registry=127.0.0.1:5000
-
-### DO NOT MODIFY THE FOLLOWING PART, UNLESS YOU KNOW WHAT IT MEANS ###
-echo_r () {
-    [ $# -ne 1 ] && return 0
-    echo -e "\033[31m$1\033[0m"
-}
-echo_g () {
-    [ $# -ne 1 ] && return 0
-    echo -e "\033[32m$1\033[0m"
-}
-echo_y () {
-    [ $# -ne 1 ] && return 0
-    echo -e "\033[33m$1\033[0m"
-}
-echo_b () {
-    [ $# -ne 1 ] && return 0
-    echo -e "\033[34m$1\033[0m"
-}
-
-usage() {
-    sudo docker images
-    echo "Usage: $0 registry1:tag1 [registry2:tag2...]"
-}
-
-[ $# -lt 1 ] && usage && exit
-
-echo_b "The registry server is $registry"
-
-
-for image in "$@"
-do
-	echo_b "Uploading $image..."
-	sudo docker tag $image $registry/$image
-	sudo docker push $registry/$image
-	sudo docker rmi $registry/$image
-	echo_g "Done"
-done