diff --git a/Dockerfile b/Dockerfile
index 7f49f12..c997d53 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,28 +1,19 @@
-FROM openjdk:8-jre-alpine
-#ENV AOZORA_EPUB3 AozoraEpub3-1.1.0b46.zip
-ENV KINDLEGEN kindlegen_linux_2.6_i386_v2_9.tar.gz
-ENV NAROU_VERSION 3.5.1
-WORKDIR /opt/narou
-
-RUN apk --update add ruby ruby-io-console ruby-json ruby-etc wget unzip && rm -rf /var/cache/apk/*
+FROM adoptopenjdk/openjdk8:alpine-slim
+LABEL maintainer "Kazushi (Jam) Marukawa <jam@pobox.com>"
 
-RUN wget https://github.com/kyukyunyorituryo/AozoraEpub3/releases/download/1.1.1b3Q/AozoraEpub3-1.1.1b3Q.zip -O /opt/AozoraEpub3.zip
-#RUN wget https://github.com/jam7/AozoraEpub3/releases/download/1.1.0b46/${AOZORA_EPUB3} -O /opt/AozoraEpub3.zip
-#RUN wget https://github.com/jam7/AozoraEpub3/releases/download/openjdk-support/AozoraEpub3.jar -O /opt/AozoraEpub3.jar
+ENV NAROU_VERSION 3.8.0
+WORKDIR /opt/narou
 
-RUN wget http://kindlegen.s3.amazonaws.com/${KINDLEGEN} && \
-    mkdir -p /opt/kindlegen && \
-    tar zxf ${KINDLEGEN} -C /opt/kindlegen && \
-    rm ${KINDLEGEN}
+RUN apk --update add --no-cache ruby ruby-io-console ruby-json ruby-etc ca-certificates curl unzip docker-cli su-exec
 
 #COPY narou-${NAROU_VERSION}.gem .
 RUN apk add --no-cache --virtual .ruby-builddeps build-base libffi-dev ruby-dev && \
     gem install narou -v ${NAROU_VERSION} --no-document && \
     apk del .ruby-builddeps
 
-COPY init.sh /usr/local/bin
-
-WORKDIR /opt/narou/work
+COPY entrypoint.sh /narou/
+COPY init.sh /narou/
+COPY kindlegen.sh /narou/
+COPY narou.sh /narou/
 
-ENTRYPOINT ["init.sh"]
-CMD ["narou"]
+ENTRYPOINT ["/narou/entrypoint.sh"]
diff --git a/Makefile b/Makefile
index dddc1d2..e6eb816 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 
-RELEASE_VERSION = v1.14
+RELEASE_VERSION = v1.15
 VERSION = latest
 
 OPTIONS = \
@@ -9,9 +9,9 @@ OPTIONS = \
 	--build-arg no_proxy=${no_proxy}
 
 build: FORCE
-	docker build -t jam7/narou-alpine:${VERSION} ${OPTIONS} .
+	docker build -t jam7/narou:${VERSION} ${OPTIONS} .
 
 release: FORCE
-	docker build -t jam7/narou-alpine:${RELEASE_VERSION} ${OPTIONS} .
+	docker build -t jam7/narou:${RELEASE_VERSION} ${OPTIONS} .
 
 FORCE:
diff --git a/README.md b/README.md
index ce3360a..9e0d42f 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # narou-docker-alpine
-A narou.rb in docker using alpine / narou.rbをalpine linuxで実行するためのdocker環境
+A docker container to run narou as a host user.
 
 ## Prerequisite
 
@@ -7,41 +7,80 @@ Need to install docker.
 
 ## Install
 
-In order to use this, installation is not really needed.  There is docker image in public.
+Download container and run it to generate kindlegen script.
 
 ```
-$ docker pull jam7/narou-alpine
+$ docker pull jam7/narou
+$ docker run --rm jam7/narou > narou
+$ chmod a+x narou
 ```
 
-## Build
+Don't add `-ti` to `docker run`.  Otherwise, you may create a narou
+script with crlf.
 
-In order to build image by yourself, perform `make`
+## How to use it
+
+Use a generated narou script.  All downloaded data is stored at
+$HOME/.narou.
 
 ```
-$ make
+$ ./narou list
+  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
+                                 Dload  Upload   Total   Spent    Left  Speed
+100   632  100   632    0     0   2202      0 --:--:-- --:--:-- --:--:--  2209
+100 4765k  100 4765k    0     0  5719k      0 --:--:-- --:--:-- --:--:-- 9845k
+.narou/ を作成しました
+小説データ/ を作成しました
+------------------------------
+AozoraEpub3の設定を行います
+                            !!!WARNING!!!
+AozoraEpub3の構成ファイルを書き換えます。narouコマンド用に別途新規インストールしておくことをオススメします
+
+(次のファイルを書き換えました)
+/opt/narou/AozoraEpub3-1.1.1b9Q/chuki_tag.txt
+
+(次のファイルをコピーor上書きしました)
+/opt/narou/AozoraEpub3-1.1.1b9Q/AozoraEpub3.ini
+/opt/narou/AozoraEpub3-1.1.1b9Q/template/OPS/css_custom/vertical_font.css
+AozoraEpub3の設定を終了しました
+初期化が完了しました！
+現在のフォルダ下で各種コマンドが使用出来るようになりました。
+まずは narou help で簡単な説明を御覧ください。
+device を kindle に設定しました
+端末をKindleに指定したことで、以下の関連設定が変更されました
+  → default.enable_half_indent_bracket が true に変更されました
+
+$
 ```
 
-## Usage
+### Run as web service (not tested recently)
 
-It is easy to use through [narou-docker-script](https://github.com/jam7/narou-docker-script).
+Use `docker run -p IP-ADDRESS:8000-8001:8000-8001 narou web -p 8000 -n`.  Narou.rb uses sepecified port 8000 for web server and +1 port 8001 for push_server.
 
-## Where is data directory
+## How to convert old data
 
-All data are stored in `/opt/narou`.  So, use docker something like `docker run -v $HOME/.narou:/opt/narou ...` to use your `$HOME/.narou` as the data directory.
+From v1.14, narou-docker changes to run as a host user.  So, it is required
+to chown $HOME/.narou to a host user is required.  Old narou-docker runs as
+a root user.
 
-## Run as web service
+```
+$ sudo chown -R `id -u`:`id -g` $HOME/.narou
+```
 
-Use `docker run -p IP-ADDRESS:8000-8001:8000-8001 narou web -p 8000 -n`.  Narou.rb uses sepecified port 8000 for web server and +1 port 8001 for push_server.
+## Build
+
+In order to build image by yourself, perform `make`
+
+```
+$ make
+```
 
 ## License
 
-@ 2017 Kazushi (Jam) Marukawa, All rights reserved.
+@ 2017-2021 Kazushi (Jam) Marukawa, All rights reserved.
 
 This project including all of its source files is released under the terms of [GNU General Public License (version 3 or later)](http://www.gnu.org/licenses/gpl.txt)
 
 ## Related projects
 
-narou.rb is in https://github.com/whiteleaf7/narou.  
-narou-docker is in https://github.com/migimigi/narou-docker.
-
-
+narou.rb is in https://github.com/whiteleaf7/narou.
diff --git a/entrypoint.sh b/entrypoint.sh
new file mode 100755
index 0000000..21bd069
--- /dev/null
+++ b/entrypoint.sh
@@ -0,0 +1,40 @@
+#!/bin/sh
+
+# This is the entrypoint script for the dockerfile. Executed in the
+# container at runtime.  Based on dockcross.
+
+if [[ $# == 0 ]]; then
+    # Presumably the image has been run directly, so help the user get
+    # started by outputting the dockcross script
+    cat /narou/narou.sh
+    exit 0
+fi
+
+# If we are running docker natively, we want to create a user in the container
+# with the same UID and GID as the user on the host machine, so that any files
+# created are owned by that user. Without this they are all owned by root.
+# The dockcross script sets the NAROU_UID and NAROU_GID vars.
+if [[ -n "$NAROU_UID" ]] && [[ -n "$NAROU_GID" ]] && [[ -n "$NAROU_GROUP" ]]; then
+
+    addgroup -g $NAROU_GID $NAROU_GROUP
+    adduser -g "" -D -G $NAROU_GROUP -u $NAROU_UID $NAROU_USER
+    export HOME=/home/${NAROU_USER}
+    chown -R $NAROU_UID:$NAROU_GID $HOME
+
+    addgroup docker
+    addgroup $NAROU_USER docker
+    # Cannot find a way to specify multiple groups in su-exec.
+    # So, adding g+s to kindlegen
+    chgrp docker /narou/kindlegen.sh
+    chmod g+s /narou/kindlegen.sh
+
+    # Enable passwordless sudo capabilities for the user
+    chown root:$NAROU_GID $(which su-exec)
+    chmod +s $(which su-exec); sync
+
+    # Run the command as the specified user/group.
+    exec su-exec $NAROU_USER /narou/init.sh "$@"
+else
+    # Just run the command as root.
+    exec "$@"
+fi
diff --git a/init.sh b/init.sh
index f94c162..0978e40 100755
--- a/init.sh
+++ b/init.sh
@@ -1,10 +1,24 @@
 #!/bin/sh
 
-if [ ! -d "/opt/narou/.narou" ]; then
-  unzip -q /opt/AozoraEpub3.zip -d /opt/narou/AozoraEpub3
-#  cp /opt/AozoraEpub3.jar /opt/narou/AozoraEpub3
-  ln -s /opt/kindlegen/kindlegen /opt/narou/AozoraEpub3
-  narou init -p /opt/narou/AozoraEpub3 -l 1.6
+AOZORA_VERSION=1.1.1b9Q
+AOZORA_ZIP=AozoraEpub3-${AOZORA_VERSION}.zip
+AOZORA_DIR=/opt/narou/AozoraEpub3-${AOZORA_VERSION}
+
+# Extract the latest AozoraEpub3 to /opt/narou (host's $HOME/.narou).
+if [ ! -d ${AOZORA_DIR} ]; then
+
+  curl -L https://github.com/kyukyunyorituryo/AozoraEpub3/releases/download/${AOZORA_VERSION}/${AOZORA_ZIP} -o /tmp/${AOZORA_ZIP}
+  unzip -q /tmp/${AOZORA_ZIP} -d /opt/narou
+  ln -s /narou/kindlegen.sh ${AOZORA_DIR}/kindlegen
+
+  # Create dummy directories
+  mkdir -p /opt/narou/AozoraEpub3-1.1.1b9Q/template/OPS/css_custom/
+
+  # Initialize by narou
+  narou init -p ${AOZORA_DIR} -l 1.6
+fi
+
+if [ ! -d "/opt/narou/.narousetting" ]; then
   narou setting device=kindle
   # Do not make .narousetting nor .narou directory at the beginning
   # since narou changes it's behavior of existance of them.
diff --git a/kindlegen.sh b/kindlegen.sh
new file mode 100755
index 0000000..64ff00e
--- /dev/null
+++ b/kindlegen.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+CMD="/opt/kindlegen/kindlegen"
+TTY=""
+
+case .$1 in
+.*sh|.*bash) CMD=""; TTY="-ti";;
+esac
+
+# Need to specify host's mount point, so we use $HOME/.narou identical to
+# narou.sh.
+exec docker run $TTY --rm \
+    -v "$HOME/.narou":/opt/narou \
+    -e KINDLEGEN_UID="$( id -u )" \
+    -e KINDLEGEN_GID="$( id -g )" \
+    -e KINDLEGEN_USER="$( id -un )" \
+    -e KINDLEGEN_GROUP="$( id -gn )" \
+    jam7/kindlegen "$CMD" "$@"
diff --git a/narou.sh b/narou.sh
new file mode 100755
index 0000000..fbe27a6
--- /dev/null
+++ b/narou.sh
@@ -0,0 +1,66 @@
+#!/bin/sh
+#
+# Usage:
+#   narou <narou-command>
+#
+# Example:
+#   narou -h                    to see on-line help
+#   narou ls                    to see the list of contents
+#   narou download n4830bu      to download n4830bu narou-shousetsu
+#   narou web                   to start web UI
+#
+# Notice:
+#   "narou web" ignore all options and starts web UI at localip:8000
+
+envs="http_proxy https_proxy ftp_proxy no_proxy"
+data=$HOME/.narou
+
+# check environment variables of particular names in $envs and pass them to container
+for i in $envs; do
+  v=`eval echo $"$i"`
+  case x$v in
+  x) ;;   # nothing to do
+  *) opt="-e $i=$v $opt"
+  esac
+done
+
+# initialize narou configuration directory
+if [ ! -d $data ]; then
+  mkdir $data
+fi
+
+CMD="narou"
+TTY="-ti"
+
+case x$1 in
+xw|xweb)
+  # retrieve external IP address of local machine to allow access from other machiens
+  IP=`ip route get 1|grep src|sed -e 's:^.*src \([1-9][0-9.]*\).*$:\1:'`
+  echo "connect $IP:8000 from web browser"
+  opt="-p $IP:8000-8001:8000-8001 $opt"
+  set -- web -p 8000 -n
+  narou s server-ws-add-accepted-domains=$IP
+  ;;
+xsh|xbash)
+  CMD=""
+  TTY="-ti"
+  ;;
+xinit)
+  case x$# in
+  x1)
+    set -- init -p /opt/narou/AozoraEpub3 --line-height 1.6
+    ;;
+  esac
+  ;;
+esac
+
+# Need to mount docker.sock in order to use jam7/kindlegen docker image.
+docker run $TTY --rm $opt \
+    -v /var/run/docker.sock:/var/run/docker.sock \
+    -v $data:/opt/narou \
+    -v /mnt/Kindle:/mnt/Kindle \
+    -e NAROU_UID="$( id -u )" \
+    -e NAROU_GID="$( id -g )" \
+    -e NAROU_USER="$( id -un )" \
+    -e NAROU_GROUP="$( id -gn )" \
+    jam7/narou $CMD "$@"