Following the decentralized mantra, files created by the application are uploaded through IPFS.
Is recomended using Infura to be your file host, but you can use any other ipfs solution.
Update the .env with the IPFS values;
# .env
NEXT_IPFS_PROJECT_ID=yourIpfsProjectId
NEXT_IPFS_PROJECT_SECRET=yourIpfsProjectSecret
NEXT_IPFS_UPLOAD_ENDPOINT=https://ipfs.infura.io:5001/api/v0
NEXT_PUBLIC_IPFS_BASE=https://YOUR-GATWAY-SUBDOMAIN.infura-ipfs.io/ipfs