Merge pull request #45 from rtucek/deps/fix-duplication

Remove duplicate lines

Author: rtucek

Dockerfile

@@ -142,12 +142,10 @@ RUN \
 	./configure \
 		--enable-fpm \
 		--enable-mbregex \
-		--enable-mbstring \
 		--enable-mbstring=all \
 		--enable-opcache \
 		--enable-sockets \
 		--enable-zip \
-		--enable-zip \
 		--with-bz2 \
 		--with-curl \
 		--with-fpm-group=www-data \