Fix Line Ending Issues for Shell Scripts in Docker for Windows 10 (#2932)

Shell scripts like entry_point.sh caused errors in Docker due to CRLF
line endings on Windows (`exec /tmp/entry_point.sh: no such file or
directory`).

Added `.gitattributes` to enforce LF line endings for *.sh files.

This resolves the issue and ensures consistent behavior across
platforms.

Author: manuelsh

.gitattibutes

@@ -0,0 +1,2 @@
+# Force LF line endings, needed for Docker to work on Windows
+*.sh text eol=lf