Add conditional to start of build

.drone.yml

@@ -11,6 +11,15 @@ volumes:
     name: flexvolsmb-drone-output
 
 steps:
+- name: Check for existing release
+  image: bv11-cr01.bessems.eu/proxy/alpine/curl
+  commands:
+    - |
+      if [[ $(curl -s -o /dev/null -w "%{http_code}" https://code.spamasaurus.com/api/v1/packages/$GIT_USERNAME/generic/skopeo/$SKOPEO_VERSION) -ne '200']]; then
+        exit 0
+      else
+        exit 1
+      fi
 - name: Clone skopeo source repository
   image: bv11-cr01.bessems.eu/proxy/alpine/git
   commands:
@@ -19,6 +28,9 @@ steps:
   # - git checkout tags/v1.9.1
   environment:
     SKOPEO_VERSION: v1.9.1
+  when:
+    status:
+    - success
 - name: Build binary
   image: bv11-cr01.bessems.eu/proxy/library/golang
   commands: