First drone test with matrix builds

.drone.yml

@@ -0,0 +1,56 @@
+---
+
+kind: pipeline
+type: docker
+name: default
+steps:
+  - name: fetch ip
+    image: cburki/mosquitto-clients
+    commands:
+      - echo "${HOSTNAME}"
+      - mosquitto_sub -h raum.ctdo.de -t "homie/${HOSTNAME}/\$localip" -C 1 | tr -d '\n'
+      - mosquitto_sub -h raum.ctdo.de -t "homie/${HOSTNAME}/\$localip" -C 1 | tr -d '\n' >lastknownip
+      - cat "lastknownip"
+  - name: configure
+    image: alpine
+    commands:
+      - sed -i "s/WIFISSID/$IOTSSID/" data/homie/config.json
+      - sed -i "s/WIFIPASS/$iotpwd/" data/homie/config.json
+      - sed -i "s/HOSTNAME/${HOSTNAME}/g" data/homie/config.json
+      - sed -i "s/HOSTNAME/${HOSTNAME}/g" data/homie/config.json
+      - lastknownip=$(cat lastknownip)
+      - sed -i "s/HOSTNAME/$lastknownip/g" platformio.ini
+    environment:
+      IOTSSID:
+        from_secret: iotssid
+      iotpwd:
+        from_secret: iotpwd
+  - name: build
+    image: suculent/platformio-docker-build
+    commands:
+      # - pip install -U platformio
+      # Build image
+      - platformio run --environment d1_mini
+      # Build file system image
+      - platformio run --target buildfs --environment d1_mini
+  - name: upload
+    image: curlimages/curl
+    commands:
+      - lastknownip=$(cat lastknownip)
+      - echo "$lastknownip"
+      # Upload image with espota-gateway
+      - |
+                curl --insecure --no-progress-meter --fail-with-body --request POST --url "https://espota.ctdo.de/" --header "Content-Type: multipart/form-data" --form ip="$lastknownip" --form firmware=@.pio/build/d1_mini/firmware.bin --no-buffer
+      # TODO: Upload file system image with espota-gateway, if the device is available again (or leave it to espota-gateway to retry often enough)
+      - |
+                curl --insecure --no-progress-meter --fail-with-body --request POST --url "https://espota.ctdo.de/" --header "Content-Type: multipart/form-data" --form ip="$lastknownip" --form spiffs=@.pio/build/d1_mini/spiffs.bin --no-buffer
+
+### matrix-builds? -  for multiple volumeknobs?
+### https://0-8-0.docs.drone.io/matrix-builds/
+###
+
+
+matrix:
+  HOSTNAME:
+  - blinky1
+  - blinky2