add diff output command

.gitea/workflows/diff-output.yaml

@@ -0,0 +1,43 @@
+name: Diff output
+
+on:
+  workflow_call:
+    inputs:
+      files:
+        required: true
+        type: string
+      repository:
+        required: true
+        type: string
+      ref:
+        required: true
+        type: string
+      image_name:
+        required: true
+        type: string
+
+jobs:
+  diff:
+    runs-on: ubuntu-22.04
+    outputs:
+      is_changed: ${{ steps.changed-files-specific.any_changed }}
+
+    steps:
+      - name: Echo test
+        run: echo "${{ inputs.files }}"
+
+      - name: Checkout Code to Build
+        uses: actions/checkout@v4
+        with:
+          repository: ${{ inputs.repository }}
+          ref: ${{ inputs.ref }}
+          token: ${{ secrets.token }}
+      - name: Get changed files in the doorman-homeassistant folder
+        id: changed-files-specific
+        uses: tj-actions/changed-files@24d32ffd492484c1d75e0c0b894501ddb9d30d62 # v47
+        with:
+          files: ${{ inputs.files }}
+
+      - name: Run step if any file(s) in the docs folder change
+        if: steps.changed-files-specific.outputs.any_changed == 'true'
+        run: echo "should build + deploy doorman-homeassistant"