ci: Add deploy step

.drone.yml

@@ -8,12 +8,28 @@ steps:
     image: crystallang/crystal:1.7.1
     volumes:
       - name: cache
-        path: /stupid
+        path: /_cache
     commands:
       - pwd
       - apt-get update && apt-get install -y cmake g++
       - shards install
       - shards build
+      - mkdir -p /_cache/bin
+      - cp -r bin/docmachine /_cache/bin
+
+  - name: Publish
+    image: curlimages/curl
+    volumes:
+      - name: cache
+        path: /_cache
+    commands:
+      - |
+        curl --user your_username:your_password_or_token \
+             --upload-file /_cache/bin/docmachine \
+           https://code.apps.glenux.net/api/packages/glenux/generic/docmachine-utils/1.0.0/docmachine
+
+# FIXME: handle multi-arch
+# FIXME: publish only on tags
 
 volumes:
   - name: cache