diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..f7dbbde
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,4 @@
+# Shell must stay LF: containers execute entrypoint scripts from the bind-mount
+# and dash rejects CRLF (a `set -e\r` line aborts startup with
+# "set: Illegal option -").
+*.sh text eol=lf
\ No newline at end of file