0.3.0

Changelog:

• Add run command
• Add provison command
• Run compose with inner env vars
• Make compose section in dkit.yml is optional

curl -L https://github.com/bibendi/dip/releases/download/0.3.0/dip-`uname -s`-`uname -m` > /usr/local/bin/dip
chmod +x /usr/local/bin/dip