Prefix environment variables

[Glutexo]

Although the Inventory app is deployed in its own container, it should still work seamlessly on a real system too. For that it’d be better to have all the app-specific environment variables prefixed. Some of them are already fine (e.g. database configuration) but many are not prefixed:

• app.config
  • APP_NAME
  • PATH_PREFIX
• tasks
  • TOPIC
  • KAFKA_GROUP
  • BOOTSTRAP_SERVERS

Prefixed variable names don’t clash with variables used by the shell or any other app.

[Glutexo]

Related to #236, which adds more environment variables.