Computed env vars

[arichiardi]

Hi there, I bumped into this project while having a look at tools that generate .env files.

First of all thanks for your work on it as it nearly solves all our problems.

There is one use case that we have here, related to connection strings: we basically compose the url from other vars in the environment, e.g.:

DB_HOST=localhost
DB_PORT=5432
DB_USER=acuity_user
DB_PASSWORD=INeedToBeMoreSecureThanThis!
DB_NAME=appserver

# The url is the only var appserver ever uses to connect to the DB
DB_URL="jdbc:postgresql://${DB_HOST}:${DB_PORT}/${DB_NAME}?user=${DB_USER}&password=${DB_PASSWORD}!&ssl=true&sslfactory=org.postgresql.ssl.NonValidatingFactory"

At the moment dump-env does not replaces values in DB_URL. It would be nice if it did 😄

Thanks for reading ☮️

[sobolevn]

Yes, this is a cool idea indeed.
The code is pretty trivial, so PR is welcome! 👍