I’ve taken the opportunity to update most of my hosted services to newer image versions.

They’re all behind private access (Tailscale, mTLS, IP whitelist etc.) so I’m not usually too worried. I update images manually whenever I can find time on a slow weekend, so this wasn’t strictly speaking related to the recent vulnerabilities. Volume data and container definitions are backed up automatically once a day and I also take manual copies of the old images when I update them.

I’ve switched to new major versions of Immich and Jellyfin in the process and I’m very pleased with the new releases, amazing great work from the developers, they’ve been killing it lately.

I’ve been tinkering with some custom images that I use for various things like syncing specialized data (logs off FTP services, archive email over IMAP from my mail provider, grab Garmin data copies, run monitors and log parameters to Influx, run port forwarders etc.)

I typically want to lock down this kind of images as much as possible, so I tweak them towards running with an unprivileged user, remove all caps and only grant strictly necessary ones, make the storage read-only inside the container etc.

Some needs have been recurring inside this type of containers, like having a decent process manager to keep some things running and restart them, or having a decent cron service. So I’ve been toying with the idea of making a “universal” image for this kind of thing and maybe publishing it for others to use as a base too. If I get around to it I’ll be announcing it here.