ci: add license

Signed-off-by: Maciej Barć <xgqt@protonmail.com>

.gitlab-ci.yml

@@ -1,5 +1,29 @@
+---
+
+
+# This file is part of src_prepare-overlay.
+
+# src_prepare-overlay is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# src_prepare-overlay is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with src_prepare-overlay.  If not, see <https://www.gnu.org/licenses/>.
+
+# Original author: Maciej Barć (xgqt@protonmail.com)
+# Copyright (c) 2020-2021, src_prepare group
+# Licensed under the GNU GPL v2 License
+
+
 image: gentoo/stage3-amd64:latest
 
+
 variables:
   FEATURES: "getbinpkg"
   GIT_SUBMODULE_STRATEGY: recursive
@@ -7,15 +31,18 @@ variables:
   PORTAGE_BINHOST: "https://xgqt.gitlab.io/gentoo-mini-mirror/binpkgs"
   USE: "-perl"
 
+
 stages:
   - test
 
+
 before_script:
   - mkdir -p /var/cache/distfiles
   - mkdir -p /var/db/repos/gentoo
   - emerge-webrsync
   - emerge -1nq --jobs=10 app-portage/repoman dev-vcs/git net-misc/wget
 
+
 test:
   stage: test
   script: