Tiny laundry cupboard, storage ideas?

[Pannacotta]

I am converting a small room (once a loo) into a laundry cupboard.
It is long but narrow, approx 1m wide x 2.5m long/deep but the door opens into it.
I need to store detergent/stain remover etc in there and would love to be able to fit in a laundry bag (ideally a divided one for whites/colours etc).

There are two windows so no wall space, other than the back of the door.

Any suggestions on storage for the above?
TIA

If it is an old period door and is solid you can cut it in half and have the 2 pieces opening out like double doors Works really well and doesn't require the same space

Thats true we could cut it, will ask my chppy to have a look.
WOuld give me more useable space.
Thanks.