diff --git a/.dockerignore b/.dockerignore
index 3629b28..ca2de46 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,3 +1,6 @@
 /README.md
 /.env**
-/.gitignore
\ No newline at end of file
+/.gitignore
+/.git/**
+.DS_Store
+npm-debug.log
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index dca0e37..b8e9a95 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,31 +4,29 @@ FROM --platform=$BUILDPLATFORM node:20-bullseye-slim
 # Set working directory
 WORKDIR /app
 
-# Run as root
+# Run as root & package install
 USER root
+RUN apt-get update && \
+  apt-get install -y \
+    build-essential \
+    python3 \
+    libsqlite3-dev && \
+  rm -rf /var/lib/apt/lists/*
 
-# Install packages
-RUN apt-get update
-RUN apt-get install -y build-essential
-RUN apt-get install -y python3
-RUN apt-get install -y libsqlite3-dev
-RUN rm -rf /var/lib/apt/lists/*
+# Run as node
+USER node
+
+# Install deps
+COPY --chown=node:node ./src/package*.json ./
+RUN npm ci
 
 # Copy source
-COPY ./src ./
-
-# Install dependencies
-RUN npm ci --unsafe-perm
-
-# Init replied_ids.json
+COPY --chown=node:node ./src ./
 RUN echo "[]" > replied_ids.json
 
-# Copy entrypoint
-COPY ./entrypoint.sh /app/docker-entrypoint.sh
-RUN chmod +x /app/docker-entrypoint.sh
+# entrypoint
+COPY --chown=node:node ./entrypoint.sh /app/docker-entrypoint.sh
+RUN sed -i 's/\r$//' /app/docker-entrypoint.sh && \
+    chmod +x /app/docker-entrypoint.sh
 
-# Change line break
-RUN sed -i 's/\r$//' /app/docker-entrypoint.sh
-
-# Run
-ENTRYPOINT ["/app/docker-entrypoint.sh"]
\ No newline at end of file
+ENTRYPOINT ["/app/docker-entrypoint.sh"]
diff --git a/README.md b/README.md
index 6baea68..aab4e4c 100644
--- a/README.md
+++ b/README.md
@@ -7,13 +7,15 @@
 ### Use public image
 ```bash
 touch memory.db
-docker run -d --restart=always -v ./memory.db:/app/memory.db -e UWUZU_HOST=uwuzu.example.com -e UWUZU_TOKEN=APITOKEN -e TWEET_ENABLED=true -e CHECK_INTERVAL=300 -e THINK_OUTPUT_ENABLED=false --name rana gitea.last2014.com/last2014/rana-for-docker:latest
+echo "[]" > replied_ids.json
+docker run -d --restart=always -v ./memory.db:/app/memory.db -v ./replied_ids.json:/app/replied_ids.json -e UWUZU_HOST=uwuzu.example.com -e UWUZU_TOKEN=APITOKEN -e TWEET_ENABLED=true -e CHECK_INTERVAL=300 -e THINK_OUTPUT_ENABLED=false --name rana gitea.last2014.com/last2014/rana-for-docker:latest
 ```
 で動きます。  
-/app/memory.dbが記憶になっているのでvolumesにしてください。
+/app/memory.dbと/app/replied_ids.jsonが記憶になっているのでvolumesにしてください。
 
 > **WARNING**
-> [#3](https://gitea.last2014.com/last2014/rana-for-docker/issues/3)の通り`touch`コマンドをサボると起動できません。
+> [#3](https://gitea.last2014.com/last2014/rana-for-docker/issues/3)の通り`touch`コマンドをサボると起動できません。  
+> また、echoをサボっても動きますが起動時にエラーが出ます。
 
 > **WARNING**
 >環境変数への値は`.env.example`を確認してください。