Add publiccode.yml validation CI (#1384)

Signed-off-by: Fabio Bonelli <fb@fabiobonelli.it>

Author: bfabio

.github/workflows/publiccodeyml-check.yml

@@ -0,0 +1,43 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License
+name: Validate publiccode.yml
+
+on:
+  push:
+    paths:
+      - "publiccode.yml"
+      - ".github/workflows/publiccodeyml-check.yml"
+  pull_request:
+    paths:
+      - "publiccode.yml"
+      - ".github/workflows/publiccodeyml-check.yml"
+
+permissions: {}
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+    name: publiccode.yml validation
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+
+      - uses: italia/publiccode-parser-action@21086c73ec0563e14c6748787efa1b34b025ad8c # v1.5.1
+        with:
+          publiccode: "publiccode.yml"
+          no-network: true