install cores

Dockerfile

@@ -26,6 +26,11 @@ RUN \
   arduino-cli config init 
 
 COPY arduino-cli.yaml /home/$USER/.arduino15/
+
+RUN \
+  arduino-cli core update-index && \
+  arduino-cli core install arduino:avr && \
+  arduino-cli core install esp8266:esp8266 
   
 
 CMD ["/bin/bash"]

arduino-cli.yaml

@@ -1,6 +1,6 @@
 proxy_type: auto
-sketchbook_path: /root/Arduino
-arduino_data: /root/.arduino15
+sketchbook_path: /home/arduino/Arduino
+arduino_data: /home/arduino/.arduino15
 board_manager:
   additional_urls:
   - http://arduino.esp8266.com/stable/package_esp8266com_index.json