allow custom nginx.conf and enable lua support closes #128

Dockerfile

@@ -7,6 +7,10 @@ ENV fpm_conf /usr/local/etc/php-fpm.d/www.conf
 ENV php_vars /usr/local/etc/php/conf.d/docker-vars.ini
 
 ENV NGINX_VERSION 1.13.4
+ENV LUA_MODULE_VERSION 0.10.10
+ENV DEVEL_KIT_MODULE_VERSION 0.3.0
+ENV LUAJIT_LIB=/usr/lib
+ENV LUAJIT_INC=/usr/include/luajit-2.0
 
 RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
   && CONFIG="\
@@ -54,6 +58,8 @@ RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
     --with-compat \
     --with-file-aio \
     --with-http_v2_module \
+    --add-module=/usr/src/ngx_devel_kit-$DEVEL_KIT_MODULE_VERSION \
+    --add-module=/usr/src/lua-nginx-module-$LUA_MODULE_VERSION \
   " \
   && addgroup -S nginx \
   && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx \
@@ -72,15 +78,20 @@ RUN GPG_KEYS=B0F4253373F8F6F510D42178520A9993A1C052F8 \
     gd-dev \
     geoip-dev \
     perl-dev \
+    luajit-dev \
   && curl -fSL http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz -o nginx.tar.gz \
   && curl -fSL http://nginx.org/download/nginx-$NGINX_VERSION.tar.gz.asc  -o nginx.tar.gz.asc \
+  && curl -fSL https://github.com/simpl/ngx_devel_kit/archive/v$DEVEL_KIT_MODULE_VERSION.tar.gz -o ndk.tar.gz \
+  && curl -fSL https://github.com/openresty/lua-nginx-module/archive/v$LUA_MODULE_VERSION.tar.gz -o lua.tar.gz \
   && export GNUPGHOME="$(mktemp -d)" \
   && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$GPG_KEYS" \
   && gpg --batch --verify nginx.tar.gz.asc nginx.tar.gz \
   && rm -r "$GNUPGHOME" nginx.tar.gz.asc \
   && mkdir -p /usr/src \
   && tar -zxC /usr/src -f nginx.tar.gz \
-  && rm nginx.tar.gz \
+  && tar -zxC /usr/src -f ndk.tar.gz \
+  && tar -zxC /usr/src -f lua.tar.gz \
+  && rm nginx.tar.gz ndk.tar.gz lua.tar.gz \ 
   && cd /usr/src/nginx-$NGINX_VERSION \
   && ./configure $CONFIG --with-debug \
   && make -j$(getconf _NPROCESSORS_ONLN) \