Adding CI build of example sketch for ESP8266 via arduino-cli

Author: aentinger

.travis.yml

@@ -75,7 +75,7 @@ before_install:
   - installLibrary arduino-libraries/Ethernet
   - installLibrary arduino-libraries/Arduino_ConnectionHandler
   - installLibrary arduino-libraries/Arduino_DebugUtils
-  - buildExampleSketch() { arduino-cli compile --warnings all --fqbn $BOARD $PWD/examples/$1; }
+  - buildExampleSketch() { arduino-cli compile --warnings all --fqbn $BOARD  --additional-urls http://arduino.esp8266.com/stable/package_esp8266com_index.json $PWD/examples/$1; }
   - buildExampleUtilitySketch() { arduino-cli compile --warnings all --fqbn $BOARD $PWD/examples/utility/$1; }
 install:
   - mkdir -p $HOME/Arduino/libraries
@@ -96,6 +96,10 @@ script:
     if [ "$BOARD" == "arduino:samd:mkrgsm1400" ]; then
       buildExampleSketch GSM_Cloud_Blink;
     fi
+  - |
+    if [ "$BOARD" == "esp8266:esp8266:huzzah" ]; then
+      buildExampleSketch ArduinoIoTCloud_ESP8266;
+    fi
 notifications:
   webhooks:
     urls: