fix holyc

langs/holyc/Dockerfile

@@ -1,3 +1,3 @@
-RUN apt-get install git gcc -y
+RUN apt-get install git gcc make -y
 RUN git clone https://github.com/Jamesbarford/holyc-lang
 RUN cd holyc-lang && make && make install && cd .. && rm -rf holyc-lang