added Drone CI/CD

.drone.yml

@@ -0,0 +1,30 @@
+kind: pipeline
+name: default
+
+steps:
+- name: docker-amd
+  image: thegeeklab/drone-docker-buildx:23
+  dockerfile: Dockerfile-amd64
+  privileged: true
+  settings:
+    username: uzurka
+    password: 
+      from_secret: docker_password
+    repo: uzurka/freebox-prometheus
+    tags: latest
+    platforms: 
+      - linux/amd64
+
+- name: docker-arm
+  image: thegeeklab/drone-docker-buildx:23
+  dockerfile: Dockerfile-arm
+  privileged: true
+  settings:
+    username: uzurka
+    password: 
+      from_secret: docker_password
+    repo: uzurka/freebox-prometheus
+    tags: latest
+    platforms: 
+      - linux/arm64
+      - linux/arm/v7