feat: turn on dependabot for docker (#20)

Author: gilescope

.github/dependabot.yml

@@ -5,26 +5,7 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
-      
-#  - package-ecosystem: "cargo"
-#    directory: "/"
-#    registries: "*"
-#    schedule:
-#      interval: "daily"
-#
-#  - package-ecosystem: "npm"
-#    directory: "/"
-#    schedule:
-#      interval: "daily"
-#
-#  - package-ecosystem: "docker"
-#    directory: "/"
-#    schedule:
-#      interval: "weekly"
-#
-#registries:
-#   github:
-#     type: git
-#     url: https://github.com
-#     username: MidnightCI
-#     password: ${{ secrets.MIDNIGHTCI_REPO }}
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"