Create a bucket in S3 for uploading images

First, we need to create a storage bucket to store our images.

1. Click "S3" in "Services" to enter in the console of S3. S3 is an object storage service provided by AWS, which stores the image we will upload in the next steps.

2. Click "Create bucket".

3. Name the bucket as "cslab-images-{your student id}" and then click "Create bucket".

4. Then it prompts the success message and you can find the bucket you just created listed in console.