Accept build variable to change the API base URL.

1 job for ci-api in 1 minute and 36 seconds (queued for 1 second)
Name Stage Failure
build Build There is an unknown failure, please try again
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs whats-open-web
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls whats-open-web
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /builds/srct/whats-open-web/npm-debug.log
ERROR: Job failed: exit code 1