Build step assumes that there is a directory named terraform

[carolynvs]

1. Run porter create
2. Add the terraform mixin

   mixins:
   - terraform
   

3. Run porter build

This results in the following error

Error: unable to build CNAB invocation image: failed to stream docker build output: The command '/bin/sh -c cd /cnab/app/terraform && terraform init -backend=false' returned a non-zero code: 2

After making a directory named terraform at the root of the bundle, the build passes. Seems like we have a hard coded assumption about where the terraform files are kept that should more gracefully handle when it's not there, or return an error during lint.

[evan-hines-js]

From the readme. The workingDir configuration setting is the relative path to your terraform files. Defaults to "terraform". So this is expected behavior but the lint may be possible?

[carolynvs]

I added workingDir after this issue was opened. 😀 Seems like we can still have a lint check that validates that the workdinDir exists, to avoid having the bundle predictably fail when it is run.