Add arm build

.drone.yml

@@ -46,6 +46,30 @@ steps:
       branch:
         - master
 
+---
+kind: pipeline
+type: docker
+name: build-arm
+
+platform:
+  os: linux
+  arch: arm
+
+steps:
+  - name: docker build and publish
+    image: plugins/docker:linux-arm
+    settings:
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      repo: nemunaire/alps
+      auto_tag: true
+      auto_tag_suffix: ${DRONE_STAGE_OS}-${DRONE_STAGE_ARCH}
+    when:
+      branch:
+        - master
+
 ---
 kind: pipeline
 name: docker-manifest
@@ -68,4 +92,5 @@ trigger:
 
 depends_on:
 - build-amd64
+- build-arm
 - build-arm64