I hope this works

.gitlab-ci.yml

@@ -1,38 +1,47 @@
+stages:
+  - compile_native
+  - deploy
+
 variables:
   GRADLE_OPTS: "-Dorg.gradle.daemon=false"
 
 build_test:
   tags:
     - windows
-  stage: deploy
+  stage: compile_native
   script:
     - .\src\main\c\build.bat
-    - .\gradlew --build-cache assemble
   artifacts:
     paths:
-      - build/libs
+      - src/main/resources/native/natives.dll
   only:
     - master
 
 build_test_cf:
-  tags:
-    - windows
+  image: gradle:alpine
   stage: deploy
   script:
-    - .\gradlew --build-cache -Pflavor=curseforge assemble
+    - gradle --build-cache assemble
+    - mv build/libs/* ./
+    - rm *-dev.jar
+    - mv *.jar latest.zip
+    - gradle --build-cache -Pflavor=curseforge assemble
+    - cp build/libs/* ./
+    - rm *-dev.jar
+    - mv *.jar latest-cf.jar
+    - mv latest.zip latest.jar
   artifacts:
     paths:
-      - build/libs
+      - latest.jar
+      - latest-cf.jar
   only:
     - master
 
 deploy:
-  tags:
-    - windows
+  image: gradle:alpine
   stage: deploy
   when: manual
   script:
-    - .\src\main\c\build.bat
-    - .\gradlew --build-cache publishModrinth
+    - gradle --build-cache publishModrinth
     - rm build/libs/*
-    - .\gradlew --build-cache -Pflavor=curseforge curseforge
+    - gradle --build-cache -Pflavor=curseforge curseforge