containers: fix for NixOS 26.05

examples/container/flake.nix

@@ -31,6 +31,9 @@
         # legacyInstallDirs = true;
 
         config = {
+          # See the file for why this is needed and when it can be removed
+          imports = [ (nix-bitcoin.outPath + "/test/lib/extra-container-workaround.nix") ];
+
           containers.mynode = {
             # Always start container along with the container host
             autoStart = true;

examples/deploy-container.sh

@@ -75,6 +75,8 @@ fi
 #
 read -rd '' src <<EOF || true
 { pkgs, lib, ... }: {
+  imports = [ $(realpath "${BASH_SOURCE[0]%/*}"/../test/lib/extra-container-workaround.nix) ];
+
   containers.demo-node = {
     extra.addressPrefix = "10.250.0";
     extra.enableWAN = true;