setup automatic builds when a tag is created

.gitlab-ci.yml

@@ -0,0 +1,77 @@
+image: barichello/godot-ci:3.5.1
+
+stages:
+    - export
+    - deploy
+
+# keep imported assets between builds
+cache:
+    key: imported-assets
+    paths:
+        - .import/
+
+variables:
+    EXPORT_NAME: hero-mark-2
+
+windows:
+    stage: export
+    rules:
+        - if: $CI_COMMIT_TAG
+    script:
+        - mkdir -v -p build/windows
+        - godot -v --export "windows" build/windows/$EXPORT_NAME.exe
+    artifacts:
+        name: $EXPORT_NAME-$CI_JOB_NAME
+        paths:
+            - build/windows
+
+linux:
+    stage: export
+    rules:
+        - if: $CI_COMMIT_TAG
+    script:
+        - mkdir -v -p build/linux
+        - godot -v --export "linux" build/linux/$EXPORT_NAME.x86_64
+    artifacts:
+        name: $EXPORT_NAME-$CI_JOB_NAME
+        paths:
+            - build/linux
+
+html5:
+    stage: export
+    rules:
+        - if: $CI_COMMIT_TAG
+    script:
+        - mkdir -v -p build/html5
+        - godot -v --export "html5" build/html5/index.html
+    artifacts:
+        name: $EXPORT_NAME-$CI_JOB_NAME
+        paths:
+            - build/html5
+
+itchio:windows:
+    stage: deploy
+    dependencies:
+        - linux
+    rules:
+        - if: $CI_COMMIT_TAG
+    script:
+        - butler push ./build/windows $ITCHIO_USERNAME/$ITCHIO_GAME:windows-beta --userversion $CI_COMMIT_TAG
+
+itchio:linux:
+    stage: deploy
+    dependencies:
+        - linux
+    rules:
+        - if: $CI_COMMIT_TAG
+    script:
+        - butler push ./build/linux $ITCHIO_USERNAME/$ITCHIO_GAME:linux-beta --userversion $CI_COMMIT_TAG
+
+itchio:html5:
+    stage: deploy
+    dependencies:
+        - html5
+    rules:
+        - if: $CI_COMMIT_TAG
+    script:
+        - butler push ./build/html5 $ITCHIO_USERNAME/$ITCHIO_GAME:html5-beta --userversion $CI_COMMIT_TAG