How to use this buildpack with pack?

[fagiani]

I'm trying to use this buildpack along with pack from buildpacks.io. When I use the same notation of heroku CLI by passing in the flag --buildpack https://github.com/heroku/heroku-buildpack-nginx.git as described here, it asks for a tar archive.

I then went to the github releases and pasted the latest .tar.gz url as parameter and then it says it couldn't find a buildpack.toml file.

I've read about some trusted buildpacks but wasn't able to understand what should I do in order to get pack trusting it and I am not sure it is related.

I'd appreciate any advice that could be helpful towards getting pack to work.

Thanks a bunch!

[fagianijunior]

I has this question too, I've made some progress cloning the repository inside my project:

$ cd myapp/buildpacks
$ git clone git@github.com:heroku/heroku-buildpack-nginx.git

then, I had created buildpack.toml with this content:

api = "0.2"

[buildpack]
uri = "."
id = "heroku-buildpack-nginx"
version = "0.0.1"

[[stacks]]
id = "heroku-18"

and now, run pack command:

$ pack build myapp --path . --buildpack buildpacks/heroku-buildpack-nginx --builder heroku/buildpacks:18

and it give me this output:

18: Pulling from heroku/buildpacks
Digest: sha256:dc7442bf1268412e310f18a99ee5716a79af7aa1c052aff164005218f4836486
Status: Image is up to date for heroku/buildpacks:18
18: Pulling from heroku/pack
Digest: sha256:dcabddd7ca1baa909b21b43ea89b999bb62cbe1a0be0bb3631fc4d7b384c926f
Status: Image is up to date for heroku/pack:18
===> DETECTING
heroku-buildpack-nginx 0.0.1
===> ANALYZING
Previous image with name "myapp" not found
===> RESTORING
===> BUILDING
ERROR: failed to build: fork/exec /cnb/buildpacks/heroku-buildpack-nginx/0.0.1/bin/build: no such file or directory
ERROR: failed to build: executing lifecycle: failed with status code: 145

why this file bin/build does not exist? What can I put inside it?