I've made my custom buildpack here but that only works online, I want to make this an offline version.
This should be simple, but initially I had some trouble getting started. Turns out all my troubles came from not having a compatible Go version. On Ubuntu 18.04 when you do a
sudo apt-get install golang you will get an older version, NOT suitable for building CF buildpacks.
I used these commands to get a working Go version:
wget https://dl.google.com/go/go1.12.7.linux-amd64.tar.gz sudo tar -xvf go1.12.7.linux-amd64.tar.gz sudo mv go /usr/local export GOROOT=/usr/local/go export GOPATH=$HOME/go export PATH=$GOPATH/bin:$GOROOT/bin:$PATH
Now, clone the buildpack repo with:
git clone https://github.com/floreseken/angular-buildpack.git
In this folder:
source .envrc go install github.com/cloudfoundry/libbuildpack/packager/buildpack-packager buildpack-packager build -cached -stack cflinuxfs3
At this point the packager will create a zip file, this is your buildpack. Go get this into Cloud Foundry, do:
cf create-buildpack [BUILDPACK_NAME] [BUILDPACK_ZIP_FILE_PATH] 1
And you are in business: