diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d20e627..5ba6ff4 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,6 +2,16 @@ stages:
   - build
   - publish
 
+# Only create pipelines automatically when a Git tag is pushed.
+# Otherwise the pipeline must be started manually (pipeline "Run" / dispatch equivalent).
+workflow:
+  rules:
+    - if: '$CI_COMMIT_TAG'
+      when: always
+    - if: '$CI_PIPELINE_SOURCE == "web"'
+      when: always
+    - when: never
+
 variables:
   DOTNET_CLI_TELEMETRY_OPTOUT: "1"
   DOTNET_SKIP_FIRST_TIME_EXPERIENCE: "1"
@@ -11,7 +21,7 @@ variables:
 build_windows:
   stage: build
   tags:
-    - windows
+    - shared-windows
   script:
     - dotnet --info
     - dotnet restore
@@ -25,7 +35,7 @@ build_windows:
 publish_release:
   stage: publish
   tags:
-    - windows
+    - shared-windows
   needs:
     - build_windows
   script: