update gitlab integration

https://docs.platformio.org/en/latest/ci/gitlab.html#integration

.gitlab-ci.yml

@@ -1,12 +1,12 @@
-build:
-  image: eclipse/platformio
-  script:
-#    - platformio lib -g install 1
-#    - platformio ci --board=esp32thing
-    - platformio run
-    - cp /home/user/.platformio/packages/framework-arduinoespressif32/tools/sdk/bin/bootloader.bin .pioenvs/esp32thing/
-    - cp /home/user/.platformio/packages/framework-arduinoespressif32/tools/partitions/boot_app0.bin .pioenvs/esp32thing/
-# to flash: esptool.py --before default_reset --after hard_reset --chip esp32 --port "/dev/ttyUSB0" --baud 115200 write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x1000 "/home/user/.platformio/packages/framework-arduinoespressif32/tools/sdk/bin/bootloader.bin" 0x8000 ".pioenvs/esp32thing/partitions.bin" 0xe000 "/home/user/.platformio/packages/framework-arduinoespressif32/tools/partitions/boot_app0.bin" 0x10000 .pioenvs/esp32thing/firmware.bin
-  artifacts:
-    paths:
-      - ".pioenvs/esp32thing/*.bin"
+image: python:2.7
+
+stages:
+ - test
+
+before_script:
+  - "pip install -U platformio"
+
+job:
+  stage: test
+  script: "platformio ci --board=heltec_wifi_lora_32"
+  variables: {PLATFORMIO_CI_SRC: "src"}