update drone-ci

.drone.yml

@@ -1,51 +1,30 @@
 ---
 kind: pipeline
 type: docker
-name: default
+name: build-check-deploy
 
 platform:
   os: "linux"
   arch: "arm"
 
 steps:
-- name: "deps"
+  # Fetch deps and check the code
+- name: "validate"
   image: "rust:1.49"
   volumes:
   - name: "cache"
     path: "/.target"
   commands:
-  - "apt-get update"
-  - "apt-get install -yqq musl-tools make"
+  - "apt-get update && apt-get install -yqq musl-tools"
   - "rustup target add armv7-unknown-linux-musleabihf"
-  - "cargo check"
-  - "cargo test"
-  - "cargo build --release --target=armv7-unknown-linux-musleabihf"
-
-- name: "check"
-  image: "rust:1.49"
-  depends_on:
-  - "deps"
-  volumes:
-  - name: "cache"
-    path: "/.target"
-  commands:
-  - "cargo check"
-
-- name: "test"
-  image: "rust:1.49"
-  depends_on:
-  - "deps"
-  volumes:
-  - name: "cache"
-    path: "/.target"
-  commands:
-  - "cargo test"
-
+  - "CC=musl-gcc cargo check --release --target=armv7-unknown-linux-musleabihf"
+  - "CC=musl-gcc cargo test  --release --target=armv7-unknown-linux-musleabihf"
+  - "CC=musl-gcc cargo build --release --target=armv7-unknown-linux-musleabihf"
+  # Deploy it somewhere.
 - name: "deploy"
   image: "rust:1.49"
   depends_on:
-  - "check"
-  - "test"
+  - "validate"
   environment:
     SSH_PK:
       from_secret: SSH_PRIVATE_KEY