Example of pre-install context script?

[hunterb]

Does anyone has an example of pre-install context script? I tried to run a script to install test dependency and the script is basically one line:

apt-get install -y libpcre3-dev

then uploaded through schedule editor. However when test started it failed because it's trying to run the content of the file with a "./"

sh: 1: ./apt-get: not found