Environment Variables

[otaviof]

The s2i build workflow supports setting environment variables:

$ s2i build --help |grep env
  -e, --env string                       Specify an single environment variable in NAME=VALUE format
  -E, --environment-file string          Specify the path to the file with environment

S2I Tasks rendered by this project should leverage the setting, like for instance on task-buildpacks repository ENV_VARS param.

A practical approach is receiving the params via STDIN and loop over the key-value pairs:

steps:
  - name: example
    args: [ "$(params.ENV_VARS[*])" ]

Then, on s2i-generate.sh script can loop over the arguments to store on a file, for instance:

for kv in "${@}"; do
    # ...
done

The set of key-value should be stored on a temporary location (/s2i-generate/s2i.env?), informed to s2i using --environment-file flag.

[otaviof]

Example type array param:

- name: ENV_VARS
  type: array
  description: List of environment variables...
  default: []

[Aneesh-M-Bhat]

I tried it with the array type and there was an issue related to tekton, so i've given it go using a comma-separated string which will then be looped over and used, PTAL, since this was needed for s2i-dotnet, i have clubed both of them together, and you can take a look at the PR: #35