hack/tf-fmt.sh doesn't work with selinux in enforcing

[sjenning]

hack/tf-fmt.sh doesn't work with selinux in enforcing

Also, perhaps we should detect if the terraform command is on the path and only use the container if terraform is not present.

[wking]

hack/tf-fmt.sh doesn't work with selinux in enforcing

Fixed by #174.

Also, perhaps we should detect if the terraform command is on the path and only use the container if terraform is not present.

The script is basically a wrapper to invoke the container. If you have a local terraform with a close-enough version, I'd just use terraform fmt ... instead of invoking tf-fmt.sh at all.