👷‍♂️ feat: add docker-push.yaml placeholder workflow for testing

.gitea/workflows/docker-push.yaml

@@ -0,0 +1,39 @@
+---
+# dance-lessons-coach Docker Push Workflow - Placeholder
+# This workflow will be implemented to handle Docker image building and pushing
+# Currently a placeholder to test workflow dispatch functionality
+
+name: Docker Push
+
+on:
+  # Manual trigger only for testing
+  workflow_dispatch:
+    inputs:
+      deps_hash:
+        description: 'Dependency hash from build-cache job'
+        required: true
+        type: string
+      ref:
+        description: 'Git reference (branch/tag)'
+        required: false
+        type: string
+        default: ''
+
+jobs:
+  placeholder:
+    name: Docker Push Placeholder
+    runs-on: ubuntu-latest-ca
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.ref || github.ref }}
+
+      - name: Show workflow inputs
+        run: |
+          echo "🚀 Docker Push Workflow Triggered"
+          echo "Dependency Hash: ${{ github.event.inputs.deps_hash }}"
+          echo "Git Reference: ${{ github.event.inputs.ref || github.ref }}"
+          echo "📝 This is a placeholder - full implementation coming soon!"
+          echo "✅ Workflow dispatch is working correctly!"