Add reminder note to manual Docker build workflow

.github/workflows/docker-build-manual.yml

@@ -2,6 +2,12 @@ name: Build Test Docker Image manually
 
 on:
   workflow_dispatch:
+    inputs:
+      _notes_:
+        description: '⚠️ Please create a new git tag before building the docker image.'
+        required: false
+        type: boolean
+        default: false
 
 permissions:
   contents: read

.github/workflows/docker-build-offline.yml

@@ -2,6 +2,12 @@ name: Build Offline Docker Image
 
 on:
   workflow_dispatch:
+    inputs:
+      _notes_:
+        description: '⚠️ Create offline Docker images only after non-trivial version releases.'
+        required: false
+        type: boolean
+        default: false
 
 permissions:
   contents: read