change behavior of nginx-envsubst.sh

Author: skomma

nginx-envsubst.sh

@@ -1,3 +1,5 @@
 #!/bin/sh
 
-exec envsubst "$(printf '${%s} ' $(env | cut -d= -f1))"
+for template in $(find /etc/nginx -name '*.conf.template'); do
+  envsubst "$(printf '${%s} ' $(env | cut -d= -f1))" < $template > ${template%.template}
+done