check if file command is installed

[tongueroo]

This is a 🐞 bug fix.

• I've added tests (if it's a bug, feature or enhancement)
• I've adjusted the documentation (if it's a feature or enhancement)
• The test suite passes (run bundle exec rspec to verify this)

Summary

When the file command is not installed, terraspace build doesn't work. This is because terraspace checks if files are text or binary files as part of processing them.

This PR provides a warning to the user to install the file command. It also allows terraspace build to continue working and defaults to assuming that all files are text files, not binary.

Context

• terraspace build failing - `spawn': No such file or directory - file (Errno::ENOENT)  #163

How to Test

sudo mv /usr/bin/file{.bak,}
cd terraspace-project-folder
terrasapce build demo

Confirm there's a warning:

$ terraspace build demo
WARN: The command 'file' is not installed.
Unable to check if files are text or binary files as a part of the Terraspace compile processing.
Assuming all files are not binary file.

Please install the file command to remove this warning message.
Building .terraspace-cache/us-west-2/dev/stacks/demo
Built in .terraspace-cache/us-west-2/dev/stacks/demo
$

Version Changes

Patch

[tongueroo]

Released in 0.6.22