Document and add copyright headers

.github/dependabot.yml

@@ -1,3 +1,10 @@
+# Copyright (c) {year} Contributors to the Eclipse Foundation
+# 
+# This program and the accompanying materials are made available under the
+# Apache Software License 2.0 which is available at:
+# https://www.apache.org/licenses/LICENSE-2.0.
+# 
+# SPDX-License-Identifier: Apache-2.0
 version: 2
 updates:
   - package-ecosystem: github-actions

.github/workflows/ci-actions.yml

@@ -1,3 +1,10 @@
+# Copyright (c) 2021 Red Hat, Inc. and others
+# 
+# This program and the accompanying materials are made available under the
+# Apache Software License 2.0 which is available at:
+# https://www.apache.org/licenses/LICENSE-2.0.
+# 
+# SPDX-License-Identifier: Apache-2.0
 name: Jakarta Contexts and Dependency Injection CI
 
 on:

CONTRIBUTING.adoc

@@ -49,7 +49,7 @@ Contributor Agreement (ECA) on file.
 For more information, please see the Eclipse Committer Handbook:
 https://www.eclipse.org/projects/handbook/#resources-commit
 
-## Eclipse Development Process
+== Eclipse Development Process
 
 This Eclipse Foundation open project is governed by the Eclipse Foundation
 Development Process and operates under the terms of the Eclipse IP Policy.
@@ -64,6 +64,32 @@ Jakarta EE specification projects.
 * https://jakarta.ee/about/jesp/
 * https://www.eclipse.org/legal/efsp_non_assert.php
 
+== Copyright headers
+
+Every new file should start with one of the following headers in whatever comment format is appropriate for the file, where `{year}` is the year the file was created and `{owner}` is the copyright owner of the original contribution:
+
+[source]
+----
+Copyright (c) {year} Contributors to the Eclipse Foundation
+
+This program and the accompanying materials are made available under the
+Apache Software License 2.0 which is available at:
+https://www.apache.org/licenses/LICENSE-2.0.
+
+SPDX-License-Identifier: Apache-2.0
+----
+
+[source]
+----
+Copyright (c) {year} {owner} and others
+
+This program and the accompanying materials are made available under the
+Apache Software License 2.0 which is available at:
+https://www.apache.org/licenses/LICENSE-2.0.
+
+SPDX-License-Identifier: Apache-2.0
+----
+
 == Contact
 
 Contact the project developers via the project's "dev" list.

README.md

@@ -1,3 +1,12 @@
+<!--
+    Copyright (c) 2011 Red Hat, Inc. and others
+
+    This program and the accompanying materials are made available under the
+    Apache Software License 2.0 which is available at:
+    https://www.apache.org/licenses/LICENSE-2.0.
+
+    SPDX-License-Identifier: Apache-2.0
+-->
 
 # GitHub Pages
 The latest news for CDI 4.x can be found in the [GitHub pages](https://jakartaee.github.io/cdi/)

pom.xml

@@ -1,3 +1,12 @@
+<!--
+    Copyright (c) 2011 Red Hat, Inc. and others
+
+    This program and the accompanying materials are made available under the
+    Apache Software License 2.0 which is available at:
+    https://www.apache.org/licenses/LICENSE-2.0.
+
+    SPDX-License-Identifier: Apache-2.0
+-->
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
@@ -80,9 +89,19 @@
 				<artifactId>apache-rat-plugin</artifactId>
 				<version>${rat.version}</version>
 				<configuration>
-					<includes>
-						<include>**/*.java</include>
-					</includes>
+					<excludes>
+						<!-- files which are generated or otherwise can't have copyright headers -->
+						<exclude>**/.cache/**</exclude>
+						<exclude>**/*.lock</exclude>
+						<exclude>src/main/asciidoc/dictionary.txt</exclude>
+						<!-- services files -->
+						<exclude>**/resources/META-INF/services/*</exclude>
+						<!-- files which are themselves licenses -->
+						<exclude>**/speclicense.html</exclude>
+						<exclude>**/license-*.asciidoc</exclude>
+						<!-- docs -->
+						<exclude>docs/**</exclude>
+					</excludes>
 				</configuration>
 				<executions>
 					<execution>