debian: generate en_US.UTF-8 locale

A podman test depends on that locale so we need to make it is installed
in the image, see containers/podman#19635.

Signed-off-by: Paul Holzinger <[email protected]>

Author: Luap99

cache_images/debian_setup.sh

@@ -17,6 +17,10 @@ fi
 # shellcheck source=./lib.sh
 source "$REPO_DIRPATH/lib.sh"
 
+# Generate en_US.UTF-8 locale as this is required for a podman test (https://github.com/containers/podman/pull/19635).
+sed -i '/en_US.UTF-8/s/^#//g' /etc/locale.gen
+locale-gen
+
 req_env_vars PACKER_BUILD_NAME
 
 bash $SCRIPT_DIRPATH/debian_packaging.sh