Add drone yaml

.drone.yml

@@ -0,0 +1,31 @@
+kind: pipeline
+name: default
+
+trigger:
+  branch:
+    - master
+  event:
+    include:
+      - push
+      - custom
+
+steps:
+  - name: Build Image
+    image: plugins/docker
+    settings:
+      repo: registry.tobiasmanske.de/docker-avif-webp
+      force_tag: true
+      registry: registry.tobiasmanske.de
+      username:
+        from_secret: docker_username
+      password:
+        from_secret: docker_password
+      tags:
+        - latest
+        - ${DRONE_BRANCH}
+      cache_from:
+        - "registry.tobiasmanske.de/docker-avif-webp:master"
+        - "registry.tobiasmanske.de/docker-avif-webp:${DRONE_BRANCH}"
+
+# image_pull_secrets:
+#   - registry