NEXTAUTH_URL=http://localhost:3000 # https://generate-secret.vercel.app/32 반드시 변경하세요 NEXTAUTH_SECRET=1234 GITHUB_CLIENT_ID= GITHUB_CLIENT_SECRET= GOOGLE_CLIENT_ID= GOOGLE_CLIENT_SECRET= NEXT_PUBLIC_API_ENDPOINT=http://localhost:3000 NEXT_PUBLIC_CODENBUTTER_SITE_ID=