Thank you for all your answers
I have took in consideration your comments and I looked on internet a lot for 2 days.
And even if every single cherry tomato is suitable in container if you cut off, I finally decide to add an other crtiteria
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Determinate tomato
So Maglia Rosa as you indicate me looks good for me. And I found an other one which fits my criterias: Gold nugget
In addition this variety is available in France for selling.
Anyways, what is the best periode for buying seeds, if I want to get 2018 seeds ?