update drone

.drone.yml

@@ -1,12 +1,22 @@
-pipeline:
- build:
-  image: rust:1.30-slim
-  commands:
-   - cargo test --release
-   - rustup target add x86_64-unknown-linux-musl
-   - cargo build --release --target x86_64-unknown-linux-musl
- docker:
-  image: plugins/docker
-  repo: repo.shimun.net/shimun/brownpaper
-  registry: repo.shimun.net
-  secrets: ["docker_username","docker_password"]
+kind: pipeline
+name: default
+
+steps:
+ - name: build
+   image: rust:1.37.0
+   commands:
+    - cargo test
+    - rustup target add x86_64-unknown-linux-musl
+    - cargo build --release --target x86_64-unknown-linux-musl
+ - name: dockerize
+   image: plugins/docker
+   settings:
+    repo: repo.shimun.net/shimun/brownpaper
+    registry: repo.shimun.net
+    username:
+     from_secret: docker_username
+    password:
+     from_secret: docker_password
+   when:
+    event:
+    - tag