ci: ignore docs only changes

Skip running backend and UI changes for docs/website updates, as
indicated by branch name.

.circleci/config.yml

@@ -805,77 +805,90 @@ workflows:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-client:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-nomad:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-api:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-devices:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-other:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-docker:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-exec:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-shared-exec:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-32bit:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-e2e:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
     - test-ui:
         filters:
           branches:
             ignore:
             - stable-website
+            - /^docs-.*/
     - test-website:
         filters:
           branches:
             ignore:
             - /^.-ui\b.*/
+            - /^docs-.*/
             - stable-website
   website:
     jobs:

.circleci/config/workflows/build-test.yml

@@ -5,6 +5,7 @@ jobs:
       branches:
         ignore:
           - /^.-ui\b.*/
+          - /^docs-.*/
           - stable-website
 - test-machine:
     name: "test-client"
@@ -58,5 +59,6 @@ jobs:
       branches:
         ignore:
         - stable-website
+        - /^docs-.*/
 - test-website:
     filters: *backend_branches_filter