Preseed mailman, install all languages

build.sh

@@ -49,6 +49,12 @@ fi
 
 set -e
 
+# Preseed debconf for mailman. Install all languages.
+debconf-set-selections <<EOF
+mailman mailman/default_server_language select en
+mailman mailman/site_languages multiselect ar (Arabic), ca (Catalan), cs (Czech), da (Danish), de (German), en (English), es (Spanish), et (Estonian), eu (Basque), fi (Finnish), fr (French), hr (Croatian), hu (Hungarian), ia (Interlingua), it (Italian), ja (Japanese), ko (Korean), lt (Lithuanian), nl (Dutch), no (Norwegian), pl (Polish), pt (Portuguese), pt_BR (Brasilian Portuguese), ro (Romanian), ru (Russian), sl (Slovenian), sr (Serbian), sv (Swedish), tr (Turkish), uk (Ukrainian), vi (Vietnamese), zh_CN (Chinese - China), zh_TW (Chinese - Taiwan)
+EOF
+
 install_packages ${BUILD_PACKAGES} ${PACKAGES}
 
 # Install the configuration, overlayed over /etc.