diff --git a/lcthw-remnants-2/Dockerfile b/lcthw-remnants-2/Dockerfile
index 3b0da42..e039450 100644
--- a/lcthw-remnants-2/Dockerfile
+++ b/lcthw-remnants-2/Dockerfile
@@ -3,4 +3,4 @@ FROM ubuntu:xenial
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get update -yq
-RUN apt-get install -yq build-essential git
+RUN apt-get install -yq build-essential git man
diff --git a/lcthw-remnants-2/Makefile b/lcthw-remnants-2/Makefile
new file mode 100644
index 0000000..931a728
--- /dev/null
+++ b/lcthw-remnants-2/Makefile
@@ -0,0 +1,4 @@
+CFLAGS=-Wall -g
+
+clean:
+	rm -f ex1
diff --git a/lcthw-remnants-2/ex1.c b/lcthw-remnants-2/ex1.c
index eaa0238..d38c074 100644
--- a/lcthw-remnants-2/ex1.c
+++ b/lcthw-remnants-2/ex1.c
@@ -1,3 +1,5 @@
+#include <stdio.h>
+
 int main(int argc, char *argv[])
 {
   puts("Hello world.");