A security update for the Docker image. FileSync itself is unchanged.
Security
- Critical zlib fix. The image now ships zlib 1.4, which fixes CVE-2026-4738.
- Up-to-date system packages. Each new image now includes the latest Alpine security updates, rather than only those in the base image when it was built.
Under the hood
- The HTTPS compose file (
docker-compose-ssl.yml) uses a refreshed Caddy image.
Upgrading
From your filesync folder, run docker compose pull && docker compose up -d (add -f docker-compose-ssl.yml after docker compose for the HTTPS setup). You don't need new compose files, but re-download docker-compose-ssl.yml if you want the refreshed Caddy image.
Full changelog: v.5.0.2...v.5.0.3