Make CF node.js buildpack

• https://github.com/cloudfoundry/nodejs-buildpack

env

• OS: Ubuntu 16.04LTS
• GO: go version go1.10 linux/amd64
  • https://github.com/golang/go/wiki/Ubuntu

Steps

1. git clone https://github.com/cloudfoundry/nodejs-buildpack.git && cd nodejs-buildpack/
2. git checkout v1.6.20
3. source .envrc
4. (cd src/nodejs/vendor/github.com/cloudfoundry/libbuildpack/packager/buildpack-packager && go install)
5. buildpack-packager build --cached=true

Troubleshoot

1. dependency sha256 mismatch

   2018/03/27 16:26:27 error while creating zipfile: 
   dependency sha256 mismatch: 
   expected sha256 3a0877a41d2cd83a669aaa58ffe9352e52639defe4bd038a662ee8fea1778ffa, 
   actual sha256 e0ab3ccaad55413324bbef16ebda9ad91cec1f5ee4e49245cb6c644e726cd755
   

   發現原因是CF在本機的快取資料夾（~/.buildpack-packager/cache）髒掉，導致在下載dependency時就可能出現錯誤，所以只要刪除暫存資料夾，從新做一次就可以了