Some users download the DEB package and install it manually and manage upgrades completely manually. This is useful in situations such as installing Docker on air-gapped systems with no access to the internet.

Why did I put the kdb in the snap file system? Because the app is sandboxed, so I had no choice.

By design, snap apps have no access to /etc. They live in their own little world, but instead of a normal chroot, they are splatted all over the standard Linux filesystem layout. With other bits mounted hither and thither. Its a mess, and subject to change with each release.

The application is executed in an encapsulated, ring-fenced way, so its files can’t interfere with those on your computer. You can even install multiple versions of the same application, and they won’t cross-pollinate or fight amongst themselves.