add rules for building

.gitlab-ci.yml

@@ -16,6 +16,10 @@ build_base:
     - buildah bud --storage-driver=${STORAGE_DRIVER} -t ${FQ_IMAGE_NAME}:base -f Dockerfile.base .
     - echo "$CI_REGISTRY_PASSWORD" | buildah login -u "$CI_REGISTRY_USER" --password-stdin "$CI_REGISTRY"
     - buildah push ${FQ_IMAGE_NAME}:base
+  rules:
+    - changes:
+        - Dockerfile.base
+    - if: '$CI_PIPELINE_SOURCE == "schedule"'
 
 include:
   - "base/coder-cli/.gitlab-ci.yml"