stack/erp5: Fix LD_PRELOAD extension.

stack/erp5/buildout.hash.cfg

@@ -86,7 +86,7 @@ md5sum = 0648e38bd5d3a15bb9f93264932740b9
 
 [template-zope]
 filename = instance-zope.cfg.in
-md5sum = fece4db89f72c16f8d71019746059469
+md5sum = 82d14f1a98197eaf986bcde3318dc870
 
 [template-balancer]
 filename = instance-balancer.cfg.in

stack/erp5/instance-zope.cfg.in

@@ -172,13 +172,20 @@ template = inline: {{ '
 rendered = ${directory:etc}/hosts
 context = key host_dict hosts-parameter:host-dict
 
+[userhosts-bin]
+recipe = slapos.recipe.template:jinja2
+mode = 755
+template = inline:#!{{ parameter_dict['dash'] }}/bin/dash
+  export HOSTS=${hosts:rendered}
+  export LD_PRELOAD={{ parameter_dict['userhosts'] }}:$LD_PRELOAD
+  exec "$@"
+rendered = ${directory:bin}/userhosts
+
 [userhosts-wrapper-base]
 recipe = slapos.cookbook:wrapper
 environment =
   HOSTALIASES=${hostaliases:rendered}
-  HOSTS=${hosts:rendered}
-  LD_PRELOAD={{ parameter_dict['userhosts'] }}:$LD_PRELOAD
-command-line = ${:wrapped-command-line}
+command-line = '${userhosts-bin:rendered}' ${:wrapped-command-line}
 
 {# Hack to deploy SSL certs via instance parameters -#}
 {% for zodb in zodb_dict.itervalues() -%}