Drop DL3020 ignore since we are using COPY

.gitlab-ci.yml

@@ -13,7 +13,7 @@ lint:
   stage: lint
   image: hadolint/hadolint:latest
   # DL3018: We don't need alpine version pins
-  script: hadolint --ignore DL3018 --ignore DL3020 Dockerfile.template
+  script: hadolint --ignore DL3018 Dockerfile.template
   except:
     - releases
     - tags