Replace docker with podman

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/elara/default.nix

@@ -18,7 +18,6 @@
     ../common/configs/system/cpu
     ../common/configs/system/dnsmasq
     ../common/configs/system/documentation
-    ../common/configs/system/docker
     ../common/configs/system/getty
     ../common/configs/system/git
     ../common/configs/system/gpg-agent
@@ -32,6 +31,7 @@
     ../common/configs/system/nixpkgs
     ../common/configs/system/ntp
     ../common/configs/system/pipewire
+    ../common/configs/system/podman
     ../common/configs/system/powertop
     ../common/configs/system/printing
     ../common/configs/system/sops