Template Substitions are not supported for YAML

[karadjov]

Currently Template Substitions are supported only for JSON.
https://github.com/aws/aws-lambda-dotnet/blob/911103991bb6c8b22216dc419f9cfb6986eaa764/Libraries/src/Amazon.Lambda.Tools/Utilities.cs#L450
This means we cannot use YAML if we want to use lambda deploy-serverless or lambda package-ci.

[normj]

Yes, I haven't implemented YAML substitution yet. Its on my list of things to do, a pull request is also welcome :)

[fabiob]

Any news on that? I can try to help with a PR.

[ashishdhingra]

@fabiob Thanks for your reply. Please feel free to contribute with the PR which could be reviewed by development team.

[hauntingEcho]

Our current deployment script to work around this is to:

1. run dotnet lambda package-ci to handle the compilation/uploads
2. run aws cloudformation package to handle AWS::Include of local resources
3. actually deploy via Stacker (aws cloudformation deploy would probably work if you're deploying a single template)

edit: I may have misunderstood this issue as being about AWS::Include template substitutions rather than the --template-substitutions CLI argument