helm-template | Helm plugin to add client | Continuous Deployment library

The linked post, based on which you claim you know that the code doesn't work, does not, in the question snippet, pre-declare the variable.

In your code you do pre-declare the variable but you are making a different error. The error is that you are using := to assign the value to the pre-declared variable, however := in templates works the same as in Go itself, it initializes a new variable. You need to use = for assignment to an existing variable.

https://pkg.go.dev/text/template@go1.17.2#hdr-Variables

A pipeline inside an action may initialize a variable to capture the result. The initialization has syntax