s3-buckets.json

{
    "AWSTemplateFormatVersion": "2010-09-09",
    "Description": "S3 Buckets",
    "Parameters": {
        "AppName": {
            "Description": "App Name - use a-z only - preferably all lower-case for consistency. Something like 'blog' - it should match the app's appspec file",
            "Type": "String",
            "MinLength": "1"
        },
        "BucketPrefix": {
            "Description": "A unique string - use something like 'yourname'. This is used to make sure that your S3 bucket name is unique",
            "Type": "String",
            "MinLength": "1"
        },
        "EnvironmentName": {
            "Description": "The environment we are building",
            "Type": "String",
            "Default": "dev",
            "AllowedValues": [
                "dev",
                "staging",
                "production"
            ],
            "MinLength": "1"
        }
    },
    "Resources": {
        "ReleaseBucket": {
            "Type": "AWS::S3::Bucket",
            "Metadata": {
                "Comment1": "Where software packages are uploaded to, so they can be applied to the system at startup",
                "Comment2": "The join below means the name is something like blog-testing-releases"
            },
            "Properties": {
                "BucketName": {
                    "Fn::Join": [
                        "",
                        [
                            {
                                "Ref": "BucketPrefix"
                            },
                            "-",
                            {
                                "Ref": "AppName"
                            },
                            "-",
                            {
                                "Ref": "EnvironmentName"
                            },
                            "-releases"
                        ]
                    ]
                },
                "Tags": [
                    {
                        "Key": "Name",
                        "Value": "App Releases"
                    }
                ]
            }
        }
    }
}