Minio setup:

mc admin user add <server_alias> splitpro <secret_key> mc mb <server_alias>/splitpro Bucket user policy.json:

{
    "Version": "2012-10-17",
  "Statement": [
      {
          "Effect": "Allow",
      "Action": ["s3:ListBucket"],
      "Resource": ["arn:aws:s3:::splitpro"]
    },
    {
        "Effect": "Allow",
      "Action": [
          "s3:GetObject",
        "s3:PutObject",
        "s3:DeleteObject"
      ],
      "Resource": ["arn:aws:s3:::splitpro/*"]
    }
  ]
}

mc admin policy create <server_alias> splitpro-rw policy.json mc admin policy attach <server_alias> splitpro-rw --user splitpro Bucket anonymous_policy.json:

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Principal": "*",
      "Action": "s3:GetObject",
      "Resource": "arn:aws:s3:::splitpro/*"
    }
  ]
}

mc anonymous set-json anonymous_policy.json <server_alias>/splitpro