if you are travelling in France you need to follow some strict rules during the Corona-virus outbreak lock-down

rule number 1 : always carry with you your ID

rule number 2 : always carry with you the derogatory travel certificate issued by the French government. You can download it here

Be aware that you need to fill the document every day and for each travel so you should print at least 10 derogatory certificates per family member.

the derogatory certificate can be used in limited cases such as work trip, food and beverages purchase, individual sports and animal training and walking.

source https://africaintelligence.org/derogatory-travel-certificate-for-france-by-monacoresources-group