Fix Docker Issues 

When you stop a docker application with "docker compose down" it does not delete the container. If you follow with a "docker compose pull" you will get a new image if there is one. When you do another "docker compose up" the old containers are still on the system. A valid warning is that some applications leverage this and reuse a container in subsequent runs that is "down" but not "deleted". Rocketchat is one such app. When a container is "downed" it is not necessarily destroyed and the image to create it is still existent as well. There are actually many scenarios where dangling vfs components end up hanging around forever. One key one are system and container shutdowns are not always "clean" and docker simply doesn't know how to clean up after itself. Portainer, like other GUI's is a nice tool for monitoring. Portainer is a "black box". It's easy to make mistakes in a GUI by accidentally "wholesaling" a command that affects an entire data structure. I emphasize the CLI because 1) you learn to understand what you really doing and 2) it helps teach the infrastructure. GUI's are nice, but they are a crutch. I run a single docker application in an Incus/LXD container because 1) I don't want to have to juggle port numbers and 2) I don't want a docker problem to "down" several applications at once. Yes, the alternative would be Kubernetes. I don't use Kubernetes because it is just too convoluted to provide proper accesses to apps with databases IMHO. By the way, chat on chat.scottibyte.com/.

Thanks!

I understand folks that use apps like OMV and Proxmox. However, my focus is on teaching folks how to use and understand the actual infrastructure. Applications like OMV provide an easy and encapsulated way to launch and maintain applications. The problem is when it breaks, the internals are not always very transparent. I advocate for simplicity and also for applications that provide a more basic approach. For that reason, I am trying to bring technologies like LXD and Incus to the limelight because they have less press than OMV and Proxmox and others.

I get it, that's why I watch your stuff, because I do like to understand the more low level stuff. I could do Debian on bare metal and probably have a very like for like system to my OMV, but as you say, I like OMV as it's is easier for NFS shares etc. I'd probably still use docker and use Dockge to manage them. I've looked at cockpit, but the disk space OMV takes up it less than 10gig. I look forward to more videos 😁