Fix pre-commit failures for existing yaml files

Author: jeremyh

.pre-commit-config.yaml

@@ -9,6 +9,7 @@ repos:
     rev: v1.24.2
     hooks:
       - id: yamllint
+        args: [-s]
   - repo: https://gitlab.com/pycqa/flake8
     rev: 3.8.3
     hooks:

.yamllint

@@ -4,11 +4,15 @@ extends: default
 rules:
   # Property-indent errors are very noisy as tools all make different choices.
   # Until a good yaml auto-indenter appears, we'll relax this rule.
-  # (we still enforce that they're indented consistently within a file)
-  indentation:
-    indent-sequences: consistent
+  indentation: disable
+  comments: disable
+  comments-indentation: disable
+
   # URLs and base64 strings break this a lot, and multi-line URLs aren't
   # clearer. Not worth it.
   line-length: disable
-  # The default formatting output
-  comments-indentation: disable
+
+  # Github Actions config uses the word 'on', but not as a truthy-value.
+  truthy:
+    ignore: |
+      .github/workflows/*.yml

docker-compose.override.yml

@@ -1,3 +1,4 @@
+---
 version: "3.4"
 services:
   explorer: