test build with arch-docker images

.drone.jsonnet

@@ -28,7 +28,7 @@ local pipeline(os, arch) = {
     },
     {
       name: "upload to docker hub " + os + "/" + arch,
-      image: "plugins/docker",
+      image: "plugins/docker:" + os + "/" + arch,
       settings: {
         repo: "fftdf/ffmap-ubnt-api",
         username: { "from_secret": "docker_username" },
@@ -36,9 +36,6 @@ local pipeline(os, arch) = {
         auto_tag: true,
         auto_tag_suffix: os + "-" + arch
       },
-      platforms: [
-        os + "/" + arch
-      ],
       when: {
         event: "tag"
       },