Update README.md

README.md

@@ -17,7 +17,6 @@ docker compose up -d
 
 # Shutdown the Docker container
 docker compose down
-
 ```
 
 ### Access the Ubuntu 20.04 GUI environment
@@ -26,5 +25,18 @@ docker compose down
 # Open http://localhost:46080/vnc.html in your web browser to connect to 
 # the Ubuntu 20.04 desktop running inside the Docker container.
 
+
+cd ~/workspace/slam_in_autonomous_driving
+
+# Compile g2o first
+cd ~/workspace/slam_in_autonomous_driving/thirdparty/g2o/
+cmake .
+make -j8
+
+# Compile the source code
+cd ~/workspace/slam_in_autonomous_driving
+mkdir build && cd build
+cmake ..
+make -j8
 ```
 <a href="url"><img src="./images/ubuntu.png" width="600"></a>