closes #166 fix gnu-libiconv charset

Dockerfile

@@ -12,6 +12,10 @@ ENV DEVEL_KIT_MODULE_VERSION 0.3.0
 ENV LUAJIT_LIB=/usr/lib
 ENV LUAJIT_INC=/usr/include/luajit-2.0
 
+# resolves #166
+ENV LD_PRELOAD /usr/lib/preloadable_libiconv.so php
+RUN apk add --no-cache --repository http://dl-3.alpinelinux.org/alpine/edge/testing gnu-libiconv
+
 RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
   && CONFIG="\
     --prefix=/etc/nginx \
@@ -62,7 +66,7 @@ RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
     --add-module=/usr/src/lua-nginx-module-$LUA_MODULE_VERSION \
   " \
   && addgroup -S nginx \
-  && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \
+  && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \ 
   && apk add --no-cache --virtual .build-deps \
     autoconf \
     gcc \