diff --git a/.dockerignore b/.dockerignore
index 69a21c8c..819f8c01 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,5 +1,6 @@
 # do not add .git, since it is needed to extract the tag
 # do not add /binaries, since it is needed by Docker images
+/tmp
 /coverage*.txt
 /apidocs/*.html
 /internal/core/VERSION
diff --git a/.gitignore b/.gitignore
index fb8fd8d5..db4976ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
+/tmp
 /binaries
 /coverage*.txt
 /apidocs/*.html