mkdir: cannot create directory '/etc/config': Read-only file system /usr/bin/nginx-start.sh: 6: cannot create /etc/config/config.json: Directory nonexistent sed: couldn't open temporary file /etc/nginx/sed0m23Xa: Read-only file system sed: couldn't open temporary file /etc/nginx/sedlulk7O: Read-only file system Usage: /usr/bin/nginx-start.sh [up|test]