https://gomplate.hairyhenderson.ca/datasources/#using-file-datasources
gomplate -d secret=/path/to/file -i 'let me tell you my secret: {{ datasource "secret" }}'
https://gomplate.hairyhenderson.ca/datasources/#using-file-datasources
gomplate -d secret=/path/to/file -i 'let me tell you my secret: {{ datasource "secret" }}'