Put environment where it belongs

.drone.yml

@@ -11,6 +11,8 @@ steps:
   volumes:
   - name: dockersock
     path: /var/run
+  environment:
+    CROSS_REMOTE=true
   commands:
   - cargo check
   - apt-get update && apt-get install -y ca-certificates curl gnupg lsb-release
@@ -18,7 +20,6 @@ steps:
   - echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian $(lsb_release -cs) stable" >> /etc/apt/sources.list.d/docker.list
   - apt-get update && apt-get install -y docker-ce-cli
   - docker info
-  - export CROSS_REMOTE=true
   - cargo install cross --git https://github.com/cross-rs/cross
   - cross build --release --target aarch64-unknown-linux-gnu
   - ls -lahR target/