Writing an output file from a template provided via --in sets no FileMode when run using Docker

[benjdewan]

Here is a simplified reproduction of the code I am running:

$ docker run --volume=$PWD:/out:rw hairyhenderson/gomplate --out=/out/file.txt --in="Hello world"
$ ls -l $PWD/file.txt
----------+ 1 benjdewan  staff  11 Apr 23 12:34 ./file.txt

I believe that the issue is related to Issue #296 and PR #301 since before those changes the output file would have been created with a a FileMode/umask of 0644, but now since there is no input file to get a the FileMode from we fall back on the OS default, and the scratch Docker image gomplate uses has no default.

[hairyhenderson]

Thanks for logging this, @benjdewan! Good catch, and sorry for the inconvenience 🙂