NODE_ENV development has no effect on cleanEnv env.isDev leading to https scheme being used for URLs on localhost

[timwaters]

When running kutt locally in development mode all generated URLs have the https scheme instead of http e.g. https://localhost:3000/abc123

Setting NODE_ENV in an environment variable has no effect.

cleanEnv env.isDev will be false and so the code to check env.isDev in server/utils/utils.js getSiteURL() and getShortURL() will return "https"

I think this was due to commit 91ea35f which removed how it set the process.env.NODE_ENV to development or production.
edits: However I suspect it's due to "start": "node server/server.js --production", in package.json

Following the readme in envalid perhaps NODE_ENV needs to be in the spec const, but just undoing the above commit made isDev work.