feat: Add Docker support and health endpoint

- Add production-ready Dockerfile with multi-stage build
- Add .dockerignore for optimized builds
- Add docker-compose.yml for easy deployment
- Add /health endpoint for container health checks
- Update README with comprehensive Docker documentation
- Include security best practices (non-root user, health checks)
- Support for both development and production deployments

src/client/components/login-form.tsx

@@ -74,11 +74,6 @@ export function LoginForm() {
           </button>
         </form>
         
-        <div className="text-center text-sm text-gray-600">
-          <p>Standard Login:</p>
-          <p className="font-mono">Benutzername: owner</p>
-          <p className="font-mono">Passwort: admin123</p>
-        </div>
       </div>
     </div>
   );

src/server/index.ts

@@ -11,6 +11,11 @@ app.use("*", async (c, next) => {
   return next();
 });
 
+// Health check endpoint
+app.get("/health", (c) => {
+  return c.json({ status: "ok", timestamp: new Date().toISOString() });
+});
+
 app.route("/rpc", rpcApp);
 app.get("/*", clientEntry);