wip: custom environment variable passing

You should be able to tell your sci deployment which env vars should be
passed to the pipelines with -e ENV1 -e ENV2 and so on

scripts/wget-and-sci.sh

@@ -2,6 +2,7 @@
 # NOTE: This script assumes that the url is a .tar.gz file.
 # TODO: check if $# is >= 1 and give a warning that the extract dir should be provided.
 set -ex  # print all that we're doing (no need for echo's)
+env
 tmpdir=$(mktemp -d)
 wget "$SCI_PIPELINE_URL" -P "$tmpdir"
 cd "$tmpdir"