diff --git a/build/.gitignore b/build/.gitignore
new file mode 100644
index 00000000..5e7d2734
--- /dev/null
+++ b/build/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore
diff --git a/images/.gitignore b/images/.gitignore
new file mode 100644
index 00000000..5e7d2734
--- /dev/null
+++ b/images/.gitignore
@@ -0,0 +1,4 @@
+# Ignore everything in this directory
+*
+# Except this file
+!.gitignore