fix: update Dockerfile and remove .next from git

app/auth/signout/route.ts

@@ -0,0 +1,11 @@
+import { createClient } from '@/utils/supabase/server'
+import { redirect } from 'next/navigation'
+
+export async function POST(request: Request) {
+    const requestUrl = new URL(request.url)
+    const supabase = await createClient()
+
+    await supabase.auth.signOut()
+
+    return redirect(`${requestUrl.origin}/login`)
+}