grim/convey

674d936a6785
ChangeLog the fixes from pr #25. Fixes #125, #126
# This plan includes a task that extends another task with
# a different, higher precedence environment. Running this
# plan should print foo, bar, then baz.
tasks:
foo:
image: gliderlabs/alpine:edge
command: echo "${MESSAGE}"
environment:
- MESSAGE=foo
bar:
type: extend
task: foo
environment:
- MESSAGE=bar
baz:
type: extend
task: bar
environment:
- MESSAGE=baz
plans:
default:
stages:
- tasks: [foo, bar, baz]