the environment variables when held in a variable need to be used via
`env` otherwise you get command not found errors.
example:
```
$ echo "AA=aa" > config/environment
$ lb config
/usr/bin/lb: 83: AA=aa: not found
$ ENV="AA=aa"
$ ${ENV} true
bash: AA=aa: command not found
$ "${ENV}" true
bash: AA=aa: command not found
$ env ${ENV} true
```
Gbp-Dch: Short
8b1f9f0131