Try to get rid of directories in result zip

.gitlab-ci.yml

@@ -54,7 +54,9 @@ zip:
   before_script:
     - apk add zip
   script:
-    - zip ${LINUX_AMD64_ZIP} target/release/${BINARY_NAME}
+    # prevents these directories from showing up in the resulting zip
+    - cd target/release
+    - zip ${LINUX_AMD64_ZIP} ${BINARY_NAME}
   artifacts:
     paths:
       - ${LINUX_AMD64_ZIP}