Fix volume issue

.drone.yml

@@ -8,24 +8,36 @@ steps:
     commands:
      - mkdir -p /build/i386
      - GOOS=linux GOARCH=386 go build -o /build/i386/deb-simple
+    volumes:
+      - name: build
+        path: /build
   - name: build-amd64
     image: golang:latest
     group: build
     commands:
      - mkdir -p /build/amd64
-     - go build -o /build/amd64/deb-simple
+     - go build -o /build/amd64/deb-simple\
+    volumes:
+      - name: build
+        path: /build
   - name: build-armv7
     image: golang:latest
     group: build
     commands:
       - mkdir -p /build/armv7
       - GOOS=linux GOARCH=arm GOARM=7 go build -o /build/armv7/deb-simple
+    volumes:
+      - name: build
+        path: /build
   - name: build-arm64
     image: golang:latest
     group: build
     commands:
       - mkdir -p /build/arm64
       - GOOS=linux GOARCH=arm64 go build -o /build/arm64/deb-simple
+    volumes:
+      - name: build
+        path: /build
   - name: package
     image: tystuyfzand/fpm
     commands:
@@ -35,6 +47,9 @@ steps:
      - ARCH=amd64 packaging/build-package.sh
      - ARCH=armv7 packaging/build-package.sh
      - ARCH=arm64 packaging/build-package.sh
+    volumes:
+      - name: build
+        path: /build
   - name: repo
     image: tystuyfzand/drone-deb-simple
     volumes: