Packages the local artifacts (local paths) that your AWS CloudFormation template
references. The command uploads local artifacts, such as source code for an AWS
Lambda function or a Swagger file for an AWS API Gateway REST API, to an S3
bucket. The command returns a copy of your template, replacing references to
local artifacts with the S3 location where the command uploaded the artifacts.

Use this command to quickly upload local artifacts that might be required by
your template. After you package your template's artifacts, run the deploy
command to ``deploy`` the returned template.

This command can upload local artifacts specified by following properties of a resource:


    - ``BodyS3Location`` property for the ``AWS::ApiGateway::RestApi`` resource
    - ``Code`` property for the ``AWS::Lambda::Function`` resource
    - ``CodeUri`` property for the ``AWS::Serverless::Function`` resource
    - ``DefinitionUri`` property for the ``AWS::Serverless::Api`` resource
    - ``SourceBundle`` property for the ``AWS::ElasticBeanstalk::ApplicationVersion`` resource
    - ``TemplateURL`` property for the ``AWS::CloudFormation::Stack`` resource


To specify a local artifact in your template, specify a path to a local file or folder,
as either an absolute or relative path. The relative path is a location
that is relative to your template's location.

For example, if your AWS Lambda function source code is in the
``/home/user/code/lambdafunction/`` folder, specify
`` CodeUri: /home/user/code/lambdafunction`` for the
``AWS::Serverless::Function`` resource. The command returns a template and replaces
the local path with the S3 location: ``CodeUri: s3://mybucket/lambdafunction.zip``.

If you specify a file, the command directly uploads it to the S3 bucket. If you
specify a folder, the command zips the folder and then uploads the .zip file.
For most resources, if you don't specify a path, the command zips and uploads the
current working directory. The exception is ``AWS::ApiGateway::RestApi``;
if you don't specify a ``BodyS3Location``, this command will not upload an artifact to S3.

Before the command uploads artifacts, it checks if the artifacts are already
present in the S3 bucket to prevent unnecessary uploads. The command uses MD5
checksums to compare files. If the values match, the command doesn't upload the
artifacts. Use the ``--force flag`` to skip this check and always upload the
artifacts.

