The image's home is /app on the read-only root filesystem, but flaresolverr writes chromedriver caches under $HOME (/app/.local); pointing HOME at the /tmp emptyDir keeps the root filesystem read-only.
The image's home is /app on the read-only root filesystem, but flaresolverr writes chromedriver caches under $HOME (/app/.local); pointing HOME at the /tmp emptyDir keeps the root filesystem read-only.