Add license in the .devcontainer/assets scripts

.devcontainer/assets/build-install-ngx-voms.sh

 #!/bin/sh
 
-# Copyright 2018 Istituto Nazionale di Fisica Nucleare
-#
-# Licensed under the EUPL, Version 1.2 or - as soon they will be approved by the
-# European Commission - subsequent versions of the EUPL (the "Licence"). You may
-# not use this work except in compliance with the Licence. You may obtain a copy
-# of the Licence at:
-#
-# https://joinup.ec.europa.eu/software/page/eupl
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the Licence is distributed on an "AS IS" basis, WITHOUT
-# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-# Licence for the specific language governing permissions and limitations under
-# the Licence.
+# Copyright 2018-2022 Istituto Nazionale di Fisica Nucleare
+# SPDX-License-Identifier: EUPL-1.2
 
 # This script builds in debug mode and installs openresty together with the
 # ngx_http_voms_module.

.devcontainer/assets/build-install-openresty.sh

 #!/bin/sh
-set -ex
+
+# Copyright 2018-2022 Istituto Nazionale di Fisica Nucleare
+# SPDX-License-Identifier: EUPL-1.2
 
 # adapted from https://github.com/openresty/docker-openresty
 
+set -ex
+
 # configuring, building and installing is not strictly necessary, since
 # module development requires to rebuild nginx itself, but it's a good
 # check to see if everything is ok

.devcontainer/assets/install-build-deps.sh

 #!/bin/sh
 
+# Copyright 2018-2022 Istituto Nazionale di Fisica Nucleare
+# SPDX-License-Identifier: EUPL-1.2
+
 yum-config-manager --add-repo https://openresty.org/package/centos/openresty.repo
 
 yum -y install epel-release

.devcontainer/assets/setup.sh

 #!/bin/sh
+
+# Copyright 2018-2022 Istituto Nazionale di Fisica Nucleare
+# SPDX-License-Identifier: EUPL-1.2
+
 set -ex
 
 yum-config-manager --add-repo https://openresty.org/package/centos/openresty.repo

.devcontainer/assets/user-setup.sh

 #!/bin/sh
+
+# Copyright 2018-2022 Istituto Nazionale di Fisica Nucleare
+# SPDX-License-Identifier: EUPL-1.2
+
 set -ex
 
 cat << EOF >> ${HOME}/.bashrc