Fixed linting in CI

.drone.yml

@@ -10,7 +10,4 @@ steps:
   - name: lint
     image: bdebyl/yamllint
     command:
-      - export YML_FILES=$(find ansible/ -name '*.yml' -not -name '*vault*')
-      - source $PWD/.lint-vars.sh
-      - ansible-lint -x $ANSIBLE_LINT_SKIP_LIST $YML_FILES
-      - yamllint $YML_FILES
+      - .lint.sh

.lint.sh

@@ -0,0 +1,7 @@
+#!/bin/sh
+export YML_FILES="$(find ansible/ -name '*.yml' -not -name '*vault*')"
+
+# Source the lint variables file (shared with Makefile)
+. ./.lint-vars.sh
+ansible-lint -x "$ANSIBLE_LINT_SKIP_LIST" $YML_FILES
+yamllint $YML_FILES