set enable_unsafe_install

Author: lathoub

ci/build-arduino.sh

@@ -20,8 +20,10 @@ arduino-cli core install arduino:avr
 # Link Arduino library
 ln -s $GITHUB_WORKSPACE $HOME/Arduino/libraries/CI_Test_Library
 
+export enable_unsafe_install=true
+
 arduino-cli lib install Ethernet
-arduino-cli lib install Ethernet3
+arduino-cli lib install --git-url https://github.com/sstaub/Ethernet3
 arduino-cli lib install 'MIDI library'
 
 # Compile all *.ino files for the Arduino Uno