Add devcontainer configuration and Dependabot setup

- Created a new devcontainer.json file for an Alpine-based development environment.
- Added a Dependabot configuration file to automate dependency updates for devcontainers.

deployment/Dockerfile

@@ -1,3 +1,3 @@
-FROM nginx:stable-alpine
-WORKDIR /var/www/app
+FROM nginx:stable-alpine
+WORKDIR /var/www/app
 COPY /prod/ /usr/share/nginx/html/

deployment/docker-compose.yaml

@@ -1,8 +1,8 @@
-
-services:
-  app:
-    image: registry.lesko.me/marek/amdruzstvo:latest
-    restart: unless-stopped
-    ports:
-      - "8080:80"
-
+
+services:
+  app:
+    image: registry.lesko.me/marek/amdruzstvo:latest
+    restart: unless-stopped
+    ports:
+      - "8080:80"
+