Merge ~aluria/charm-prometheus-grok-exporter:copyright-charmproof into charm-prometheus-grok-exporter:master

[Alvaro Uria]

[Xav Paice (xavpaice)]

LGTM

review: Approve

[Giuseppe Petralia (peppepetra)]

lgtm

review: Approve

diff --git a/Makefile b/Makefile
index fd2bbe7..0a84b5f 100644
--- a/Makefile
+++ b/Makefile
@@ -61,9 +61,9 @@ black:
 	@echo "Reformat files with black"
 	@cd src && tox -e black
 
-proof:
+proof: build
 	@echo "Running charm proof"
-	@charm proof src
+	@charm proof ${CHARM_BUILD_DIR}/${CHARM_NAME}
 
 unittests:
 	@echo "Running unit tests"
diff --git a/src/copyright b/src/copyright
index d26af19..ff6b476 100644
--- a/src/copyright
+++ b/src/copyright
@@ -1,16 +1,16 @@
-Format: http://dep.debian.net/deps/dep5/
+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0
 
 Files: *
-Copyright: Copyright 2020, Canonical Ltd.
-License: GPL-3
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License version 3, as
- published by the Free Software Foundation.
- .
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranties of
- MERCHANTABILITY, SATISFACTORY QUALITY, 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 this program.  If not, see <http://www.gnu.org/licenses/>.
\ No newline at end of file
+Copyright: 2020, Canonical Ltd.
+License: Apache-2.0
+ Licensed 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.