»file
Function
file
reads the contents of a file at the given path and returns them as
a string.
file(path)
Strings in the Packer language are sequences of Unicode characters, so this function will interpret the file contents as UTF-8 encoded text and return the resulting Unicode characters. If the file contains invalid UTF-8 sequences then this function will produce an error.
This function can be used only with files that already exist on disk
at the beginning of a Packer run. Functions do not participate in the
dependency graph, so this function cannot be used with files that are generated
dynamically during a Packer operation. We do not recommend using dynamic
local files in Packer configurations, but in rare situations where this is
necessary you can use
the local_file
data source
to read files while respecting resource dependencies.
»Examples
> file("${path.folder}/hello.txt")
Hello World
»Related Functions
fileexists
determines whether a file exists at a given path.