diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4204f169..1cd544976 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,16 @@
+# 0.3.1 (2019-08-25)
+### Features / Enhancement
+- **Docker Image Optimization**. Split docker further into master, worker, frontend with alpine image.
+- **Unit Tests**. Covered part of the backend code with unit tests.
+- **Frontend Optimization**. Login page, button size, hints of upload UI optimization. 
+- **More Flexible Node Registration**. Allow users to pass a variable as key for node registration instead of MAC by default.
+
+### Bug Fixes
+- **Uploading Large Spider Files Error**. Memory crash issue when uploading large spider files. [#150](https://github.com/crawlab-team/crawlab/issues/150)
+- **Unable to Sync Spiders**. Fixes through increasing level of write permission when synchronizing spider files. [#114](https://github.com/crawlab-team/crawlab/issues/114)
+- **Spider Page Issue**. Fixes through removing the field "Site". [#112](https://github.com/crawlab-team/crawlab/issues/112)
+- **Node Display Issue**. Nodes do not display correctly when running docker containers on multiple machines. [#99](https://github.com/crawlab-team/crawlab/issues/99)
+
 # 0.3.0 (2019-07-31)
 ### Features / Enhancement
 - **Golang Backend**: Refactored code from Python backend to Golang, much more stability and performance.
diff --git a/docker/Dockerfile.frontend.alpine b/docker/Dockerfile.frontend.alpine
index d313cdcb2..f809ee7ce 100644
--- a/docker/Dockerfile.frontend.alpine
+++ b/docker/Dockerfile.frontend.alpine
@@ -1,10 +1,20 @@
+FROM node:8.16.0 AS frontend-build
+
+ADD ./frontend /app
+WORKDIR /app
+
+# install frontend
+RUN npm install -g yarn && yarn install --registry=https://registry.npm.taobao.org
+
+RUN npm run build:prod
+
 FROM alpine:latest
 
 # 安装nginx
 RUN mkdir /run/nginx && apk add nginx
 
 # 拷贝编译文件
-COPY dist  /app/dist
+COPY --from=frontend-build /app/dist /app/dist
 
 # 拷贝nginx代理文件
 COPY crawlab.conf /etc/nginx/conf.d
@@ -12,9 +22,6 @@ COPY crawlab.conf /etc/nginx/conf.d
 # 拷贝执行脚本
 COPY docker_init.sh /app/docker_init.sh
 
-# 定义后端API脚本
-ENV CRAWLAB_API_ADDRESS http://localhost:8000
-
 EXPOSE 8080
 
 CMD ["/bin/sh", "/app/docker_init.sh"]
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