REUSE compliance

Author: fhunleth

.circleci/config.yml

@@ -14,6 +14,13 @@ tags: &tags
   ]
 
 jobs:
+  check-license:
+    docker:
+      - image: fsfe/reuse:latest
+    steps:
+      - checkout
+      - run: reuse lint
+
   build-test:
     parameters:
       tag:
@@ -66,6 +73,7 @@ jobs:
 workflows:
   checks:
     jobs:
+      - check-license
       - build-test:
           name: << matrix.tag >>
           matrix:
@@ -74,6 +82,7 @@ workflows:
       - publish:
           requires:
             - build-test
+            - check-license
           filters:
             tags:
               only: /^v\d+\.\d+\.\d+$/ # Only version tags