[CI] Add Dockerfile monitoring to dependabot (#928)

This will allow dependabot to inform us when there are newer version of the base packages for our Dockerfiles.

.dependabot/config.yml

@@ -9,6 +9,36 @@ update_configs:
   - package_manager: "javascript"
     directory: "/web"
     update_schedule: "live"
+    commit_message:
+      prefix: "[MISC] "
+      include_scope: true
+  - package_manager: "docker"
+    directory: "/"
+    update_schedule: "daily"
+    commit_message:
+      prefix: "[MISC] "
+      include_scope: true
+  - package_manager: "docker"
+    directory: "/internal/suites/example/compose/authelia"
+    update_schedule: "daily"
+    commit_message:
+      prefix: "[MISC] "
+      include_scope: true
+  - package_manager: "docker"
+    directory: "/internal/suites/example/compose/haproxy"
+    update_schedule: "daily"
+    commit_message:
+      prefix: "[MISC] "
+      include_scope: true
+  - package_manager: "docker"
+    directory: "/internal/suites/example/compose/duo-api"
+    update_schedule: "daily"
+    commit_message:
+      prefix: "[MISC] "
+      include_scope: true
+  - package_manager: "docker"
+    directory: "/internal/suites/example/compose/kind"
+    update_schedule: "daily"
     commit_message:
       prefix: "[MISC] "
       include_scope: true