refactor: Add .devcontainer

#9

Author: softwaredevelop

.github/dependabot.yml

@@ -12,7 +12,7 @@ updates:
       - "github-actions dependencies"
 
   - package-ecosystem: "docker"
-    directory: "/"
+    directory: ".devcontainer/"
     schedule:
       interval: "weekly"
       day: "friday"