Apparently I cannot be successful without breaking any rules.
Make up you mind, door! I have places to go today.
This might be nature's way of saying not to go out today.
Try to push, then try to pull and then try the actual entrance. After seeing that locked door you may bother to actually read our sign with opening hours.
An extra lock is always good to have.
Just stick a "do not enter" sign on an entrance and watch how total chaos takes over.