Add documentation about environment variables #2314
Merged
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
While I was working on #2311, I thought it would be useful to document the environment-variables used in the app. I think these are all the environment variables that are specific to this app or at least have an app-specific use in this app, but I might have missed some.
It would be nice to work out which ones are required in which environments, but that's a non-trivial amount of work, because the app doesn't seem to fail fast for at least some of the required ones.
Note that I haven't included env vars which are used as arguments to rake tasks or scripts.