.travis.yml

language: ruby
rvm:
- 2.2.2

addons:
  apt:
    packages:
    - libcurl4-openssl-dev # required to avoid SSL errors
    
install:
- npm install gitbook-cli -g
- gitbook install
- gitbook build
- gem install html-proofer


script: 

- htmlproofer ./_book 
  --empty-alt-ignore true 
  --check-external-hash true
  --url-ignore 'https://img.shields.io/badge/discuss-px4-ff69b4.svg,https://img.shields.io/github/release/PX4/Firmware.svg,https://support.intrinsyc.com/attachments/download/1571/Flight_3.1.3.1_qcom_flight_controller_hexagon_sdk_add_on.zip,https://store.3dr.com/products/3dr-pixhawk,https://store.3dr.com/products/433-mhz-telemetry-radio,https://store.3dr.com/products/915-mhz-telemetry-radio,https://store.3dr.com/products/digital-airspeed-sensor,https://store.3dr.com/products/wifi-telemetry-radio'


env:
  global:
  - NOKOGIRI_USE_SYSTEM_LIBRARIES=true   # speeds up installation of html-proofer

## Allow links to fail any time and be displayed as warnings.
matrix:
  allow_failures:
    - rvm: 2.2.2