alpine: added perl dynamic module to the build.

The only part that is left unsynced with the Debian image is the support
for nJScript.  I will wait for the official release before including it
to alpine build because there is no sane way to fetch and authenticate
njs sources yet.

Author: thresheek

mainline/alpine/Dockerfile

@@ -37,6 +37,7 @@ ENV CONFIG "\
 	--with-http_xslt_module=dynamic \
 	--with-http_image_filter_module=dynamic \
 	--with-http_geoip_module=dynamic \
+	--with-http_perl_module=dynamic \
 	--with-threads \
 	--with-stream \
 	--with-stream_ssl_module \
@@ -64,6 +65,7 @@ RUN \
 		libxslt-dev \
 		gd-dev \
 		geoip-dev \
+		perl-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 \
 	&& export GNUPGHOME="$(mktemp -d)" \
@@ -80,6 +82,7 @@ RUN \
 	&& mv objs/ngx_http_xslt_filter_module.so objs/ngx_http_xslt_filter_module-debug.so \
 	&& mv objs/ngx_http_image_filter_module.so objs/ngx_http_image_filter_module-debug.so \
 	&& mv objs/ngx_http_geoip_module.so objs/ngx_http_geoip_module-debug.so \
+	&& mv objs/ngx_http_perl_module.so objs/ngx_http_perl_module-debug.so \
 	&& ./configure $CONFIG \
 	&& make \
 	&& make install \
@@ -92,6 +95,7 @@ RUN \
 	&& install -m755 objs/ngx_http_xslt_filter_module-debug.so /usr/lib/nginx/modules/ngx_http_xslt_filter_module-debug.so \
 	&& install -m755 objs/ngx_http_image_filter_module-debug.so /usr/lib/nginx/modules/ngx_http_image_filter_module-debug.so \
 	&& install -m755 objs/ngx_http_geoip_module-debug.so /usr/lib/nginx/modules/ngx_http_geoip_module-debug.so \
+	&& install -m755 objs/ngx_http_perl_module-debug.so /usr/lib/nginx/modules/ngx_http_perl_module-debug.so \
 	&& ln -s ../../usr/lib/nginx/modules /etc/nginx/modules \
 	&& strip /usr/sbin/nginx* \
 	&& strip /usr/lib/nginx/modules/*.so \