diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..c0fac51
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1 @@
+heatmaps
diff --git a/.gitignore b/.gitignore
index d4b8191..a7d6a15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,5 @@ config/*
 !config/trackdirect.ini
 
 ogndevices
+
+heatmaps