add Eclipse Public License v2.0

https://web.archive.org/web/20240815072428/https://www.eclipse.org/legal/epl-2.0/

license from https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt

header from https://web.archive.org/web/20240815074556/https://www.eclipse.org/legal/epl-2.0/faq/#h.aq5xwcjmpy2a

> Postfix is now also distributed with the more recent Eclipse Public License 2.0.
https://web.archive.org/web/20230608040115/http://www.postfix.org/announcements/postfix-3.3.0.html
https://web.archive.org/web/20240815074226/http://ftp.porcupine.org/mirrors/postfix-release/index.html

Dockerfile

@@ -1,3 +1,11 @@
+# Copyright (c) 2024 Fabian Peter Hammerle
+#
+# This program and the accompanying materials are made available under the
+# terms of the Eclipse Public License 2.0 which is available at
+# http://www.eclipse.org/legal/epl-2.0.
+#
+# SPDX-License-Identifier: EPL-2.0
+
 FROM docker.io/alpine:3.20.2
 
 # http://www.postfix.org/announcements.html

LICENSE

@@ -0,0 +1,277 @@
+Eclipse Public License - v 2.0
+
+    THE ACCOMPANYING PROGRAM IS PROVIDED UNDER THE TERMS OF THIS ECLIPSE
+    PUBLIC LICENSE ("AGREEMENT"). ANY USE, REPRODUCTION OR DISTRIBUTION
+    OF THE PROGRAM CONSTITUTES RECIPIENT'S ACCEPTANCE OF THIS AGREEMENT.
+
+1. DEFINITIONS
+
+"Contribution" means:
+
+  a) in the case of the initial Contributor, the initial content
+     Distributed under this Agreement, and
+
+  b) in the case of each subsequent Contributor:
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+     ii) additions to the Program;
+  where such changes and/or additions to the Program originate from
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+  Contributions do not include changes or additions to the Program that
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+
+"Contributor" means any person or entity that Distributes the Program.
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+"Modified Works" shall mean any work in Source Code or other form that
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+
+3. REQUIREMENTS
+
+3.1 If a Contributor Distributes the Program in any form, then:
+
+  a) the Program must also be made available as Source Code, in
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+4. COMMERCIAL DISTRIBUTION
+
+Commercial distributors of software may accept certain responsibilities
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+
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+
+EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, AND TO THE EXTENT
+PERMITTED BY APPLICABLE LAW, NEITHER RECIPIENT NOR ANY CONTRIBUTORS
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+EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE
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+7. GENERAL
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+If any provision of this Agreement is invalid or unenforceable under
+applicable law, it shall not affect the validity or enforceability of
+the remainder of the terms of this Agreement, and without further
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+Exhibit A - Form of Secondary Licenses Notice
+
+"This Source Code may also be made available under the following
+Secondary Licenses when the conditions for such availability set forth
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+version(s), and exceptions or additional permissions here}."
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+  You may add additional accurate notices of copyright ownership.