diff --git a/povray_existing/Dockerfile b/povray_existing/Dockerfile
new file mode 100644
index 0000000..f8d5c28
--- /dev/null
+++ b/povray_existing/Dockerfile
@@ -0,0 +1,3 @@
+FROM jmaxwilson/povray:3.7-stable
+
+RUN povray --version
\ No newline at end of file
diff --git a/povray_gcc/build.sh b/povray_gcc/build.sh
index 3d5a047..d79a37a 100644
--- a/povray_gcc/build.sh
+++ b/povray_gcc/build.sh
@@ -2,7 +2,7 @@
 
 EMAIL="hi@mmcwilliams.com"
 NAME="Matt McWilliams"
-CPPFLAGS="-I/usr/include/OpenEXR"
+CPPFLAGS="-Wall -Wextra -Werror -I/usr/include/OpenEXR"
 
 cd unix/
 ./prebuild.sh