diff --git a/Dockerfile b/Dockerfile
index 60b19ce..c15fdf0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,3 +14,6 @@
 COPY . /opt/enodebd
 WORKDIR /opt/enodebd
 RUN make venv && make install-protoc && make proto
+
+EXPOSE 8080 48080
+CMD ["venv/bin/python", "main.py"]
diff --git a/README.md b/README.md
index 5613d8b..2a8b39c 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,15 @@
 
 eNodeB daemon is an Automatic Configuration Server (ACS) which forks from [Facebook Magma project](https://github.com/magma/magma). It currently tested with Sercomm eNodeB P27-SCE4255W small cell.
 
-# Run
+# Install & Run
 
-```
-make venv
+```bash
+# The all command will create a virtual environment, install protoc and compile the proto files
+make all
+# Enter the virtual environment
+. venv/bin/activate
+
+# Run enodebd
 python main.py
 ```
 
@@ -41,6 +46,7 @@
   - job_name: 'prometheus'
     scrape_interval: 5s
     static_configs:
+      # The 8000 is the default port of prometheus client of enodebd
       - targets: ['172.17.0.1:8000']
 ```
 
diff --git a/VERSION b/VERSION
index 341cf11..0c62199 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.2.0
\ No newline at end of file
+0.2.1
diff --git a/docker-compose.yml b/docker-compose.yml
index 2447318..968564c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -14,6 +14,4 @@
     ports:
       - "8000:8000"
       - "48080:48080"
-    command: "venv/bin/python main.py"
-  prometheus:
-    image: 
\ No newline at end of file
+    command: "venv/bin/python main.py"
\ No newline at end of file