add cubecell stuff

Dockerfile

@@ -24,14 +24,15 @@ RUN \
   useradd -m -r -u $ArduinoUID -g $USER -G dialout $USER
 
 USER $USER
-WORKDIR ~
+WORKDIR /home/${USER}
 
 RUN \
   arduino-cli config init 
 
-COPY arduino-cli.yaml ~/.arduino15/
+COPY arduino-cli.yaml /home/${USER}/.arduino15/
 
 RUN \
+  pwd && \
   ls -l ~/.arduino15 && \
   arduino-cli core update-index && \
   arduino-cli core install arduino:avr && \

arduino-cli.yaml

@@ -6,4 +6,6 @@ board_manager:
   - http://arduino.esp8266.com/stable/package_esp8266com_index.json
   - https://dl.espressif.com/dl/package_esp32_index.json
   - https://github.com/Heltec-Aaron-Lee/WiFi_Kit_series/releases/download/0.0.7/package_heltec_esp32_index.json
+  - http://resource.heltec.cn/download/package_CubeCell_index.json
+