Add pre-commit hooks

Signed-off-by: Kyle Harding <kyle@balena.io>

.pre-commit-config.yaml

@@ -0,0 +1,25 @@
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.2.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+    -   id: check-added-large-files
+
+-   repo: https://github.com/renovatebot/pre-commit-hooks
+    rev: 38.101.0
+    hooks:
+    -   id: renovate-config-validator
+
+-   repo: https://github.com/rhysd/actionlint
+    rev: v1.7.3
+    hooks:
+    -   id: actionlint-docker
+
+-   repo: https://github.com/hadolint/hadolint
+    rev: v2.12.0
+    hooks:
+    -   id: hadolint-docker

Dockerfile

@@ -159,7 +159,7 @@ COPY --from=root-key --chown=unbound:unbound /var/unbound/root.key /var/unbound/
 
 RUN [ "unbound", "-V" ]
 # hadolint ignore=DL3059
-RUN [ "unbound-checkconf" ]	
+RUN [ "unbound-checkconf" ]
 # hadolint ignore=DL3059
 RUN [ "drill", "-v" ]
 # hadolint ignore=DL3059

rootfs_overlay/etc/unbound/custom.conf.d/cachedb.conf.example

@@ -2,4 +2,4 @@ cachedb:
   backend: "redis"
   redis-server-host: redis
   redis-server-port: 6379
-  redis-expire-records: yes
+  redis-expire-records: yes

rootfs_overlay/etc/unbound/unbound.conf

@@ -76,7 +76,7 @@ server:
 
     # Fetch DS records earlier (DNSSEC): more cpu usage, less latency
     prefetch-key: yes
-    
+
     # One thread should be sufficient, can be increased on beefy machines.
     # In reality for most users running on small networks or on a single machine,
     # it should be unnecessary to seek performance enhancement by increasing num-threads above 1.