Add bucket policy alternative

docs/basics/101-139-s3.rst

@@ -222,6 +222,28 @@ To make them public, switch to the "Permissions" tab in your buckets S3 console
 
    Bucket settings allow making the bucket public
 
+Alternatively, create a bucket policy as shown below, inserting your own bucket name into the two placeholders::
+
+    {
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Effect": "Allow",
+            "Principal": "*",
+            "Action": "s3:GetObject",
+            "Resource": [
+                "arn:aws:s3:::YOUR-BUCKET-NAME-HERE",
+                "arn:aws:s3:::YOUR-BUCKET-NAME-HERE/*"
+                ]
+            }
+        ]
+    }
+
+.. figure:: ../artwork/src/aws_s3_bucket_policy.png
+
+   Bucket policy to allow objects in the bucket to be retrieved by anyone.
+
+
 .. find-out-more:: Info on public buckets created prior to April 2023
 
     Amazon S3 buckets created before April 2023 supported using ACLs for public read access to files.