fix(lidar_centerpoint): add docker instruction

Signed-off-by: Kaan Çolak <kaancolak95@gmail.com>

Author: kaancolak

perception/lidar_centerpoint/README.md

@@ -131,6 +131,25 @@ cd mmdetection3d
 pip install -v -e .
 ```
 
+#### Use Training Repository with Docker
+Alternatively, you can use Docker to run the mmdetection3d repository.We provide a Dockerfile to build a Docker image with the mmdetection3d repository and its dependencies.
+
+Clone fork of the mmdetection3d repository
+```bash
+git clone https://github.com/autowarefoundation/mmdetection3d.git
+```
+
+Build the Docker image by running the following command
+```bash
+cd mmdetection3d
+docker build -t mmdetection3d -f docker/Dockerfile .
+```
+
+Run the Docker container
+```bash
+docker run --gpus all --shm-size=8g -it -v {DATA_DIR}:/mmdetection3d/data mmdetection3d
+```
+
 ### Preparing NuScenes dataset for training
 
 **Step 1.** Download the NuScenes dataset from the [official website](https://www.nuscenes.org/download) and extract the dataset to a folder of your choice.