diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..73494e1
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,6 @@
+# This repository is authored on Windows and deployed to Ubuntu. A shell script
+# or SQL file checked out with CRLF fails on the host with an unhelpful error,
+# so everything textual is normalised to LF.
+* text=auto eol=lf
+*.png binary
+*.pdf binary