diff --git a/plane/Dockerfile.runner.dockerignore b/plane/Dockerfile.runner.dockerignore
new file mode 100644
index 0000000..7e0d9f4
--- /dev/null
+++ b/plane/Dockerfile.runner.dockerignore
@@ -0,0 +1,6 @@
+# Build context for plane/Dockerfile.runner: only what the image copies.
+*
+!pyproject.toml
+!README.md
+!src/
+src/**/__pycache__