* Add drone build badge based on travis
* Fix wrong mocked endpoint for done builder
* Refactor service tester using helper method
* Add missing failure status to red statuses
* Remove extraneous invalid svg test from drone
* Test on failure red status in build status spec
* refactor(drone): use json service instead of svg
* refactor(drone): remove status text and extraneous build path in test
* refactor(drone): allow defining self-hosted drone instances
* fix(drone): use proper urls in drone examples
* fix(drone): add drone token authorization for self-hosted instances
* refactor(drone): call render build status badge directly instead of render
* refactor(drone): use server query parameter for self-hosted instances
* fix(drone): separate url and query params in example
* fix(drone): use actual build status message in examples
* fix(drone): add missing message for status code 401
Co-Authored-By: byCedric <me@bycedric.com>
* refactor(drone): remove color from drone tests
* refactor(drone): remove extraneous comments from drone tests
* refactor(drone): remove unused static preview method
* refactor(drone): remove unused static render method
* refactor(drone): reuse render build status badge helper in static previews
* fix(drone): test inaccessible repos on new message
* Tweak Docker initialization
1. Set NODE_ENV=production in Docker.
2. When NODE_ENV is production, bind to all interfaces. This seems like a
sensible default.
3. Exclude Dockerfile from container to improve layer cacheability when
modifying the dockerfile.
Ref #3165
* Rm obsolete comment
This implements the configuration mechanism I described in #2621. The heavy lifting is delegated to [node-config](https://github.com/lorenwest/node-config) with a minor assist from [dotenv](https://github.com/motdotla/dotenv).
`private/secret.json` has been replaced with environment variables and/or `config/local.yml`. See `doc/server-secrets.md`.
